Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 1 ABC-NACO D(AS)
B-1 General documents.
SUBSERIES 2 ACCIDENTS
B-1 1840-1869.
B-1 1870-1879.
B-1 1880-1889.
B-1 1890-1899.
B-1 1900-1909.
B-1 1910-1919
B-1 1920-1929.
B-1 1930-1939.
B-1 1940-1949.
B-1 1950-1959.
B-1 1960-1969.
B-1 1970-1975.
B-1 1976-1979.
B-1 1980-1982.
B-2 1983.
B-2 1984.
B-2 1985.
B-2 1986.
B-2 1987.
1 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-2 1988.
B-2 1990.
B-2 1991.
B-2 1993.
B-2 1994.
B-2 1995.
B-2 January, March-December, 1996.
B-2 February, 1996.
B-2 January-July, 1997.
B-3 August-December, 1997.
B-3 1998.
B-3 1999.
B-3 2000.
B-3 2001.
B-3 2002-2004.
SUBSERIES 3 AMERICAN RAILWAY ASSOCIATION
B-3 Signal Division.
B-3 Signal Section, 1920-1925.
B-3 Signal Section, 1926-1929.
B-3 Signal Section, 1930-1934.
SUBSERIES 4 AMERICAN RAILWAY ENGINEERING ASSOCIATION
B-4 Signals and Interlocking.
2 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents AMERICAN RAILWAY ENGINEERING AND MAINTENANCE OF WAY SUBSERIES 5 ASSOCIATION
B-4 Signals and Interlocking.
SUBSERIES 6 AMTRAK
B-4 Timetables.
SUBSERIES 7 ASSOCIATION OF AMERICAN RAILROADS
Subsubseries 7.1 General documents
B-4 1930-1989.
B-4 1990-1999.
B-4 2000-2002.
Subsubseries 7.2 Communication and Signal Division
B-4 General documents, 1980-1989.
B-4 Newsletters.
B-4 General documents, 1990-1995.
Subsubseries 7.3 Communication and Signal Section
B-5 1960-1969.
B-5 1970-1979.
B-5 1996-1997.
B-5 Signal manual.
Subsubseries 7.4 Signal Section
B-5 1935-1949.
B-5 1950-1960.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 8 BANGOR AND AROOSTOOK.
B-5 General documents.
SUBSERIES 9 BIBLIOGRAPHY AND SOURCES
B-5 1830-1960.
B-5 1961-2004.
SUBSERIES 10 BONDS
Pictures (black and white photograph: "An 'ironless bond,' part of the B-5 Young System A-C Block Signaling, patents for which were acquired by the Pneumatic Signal Company, 1903").
B-5 General documents.
B-5 Impedance.
B-5 Propulsion.
B-5 Rail.
SUBSERIES 11 BROTHERHOOD OF RAILROAD SIGNALMEN
B-5 1900-1919.
B-5 1920-1929.
B-5 1930-1939.
B-5 1940-1949.
B-5 1950-1959.
B-5 1960-1969.
B-5 1970-1975.
B-5 1976.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-5 1977-1978.
B-5 1979
SUBSERIES 12 BURLINGTON NORTHERN AND SANTA FE RAILWAY
B-6 Atchison, Topeka and Sante Fe.
B-6 Burlington Northern.
B-6 Chicago, Burlington and Quincy.
B-6 Colorado and Southern, Fort Worth and Denver.
B-6 Great Northern.
B-6 Northern Pacific.
B-6 St. Louis - San Francisco.
SUBSERIES 13 CANADA
B-6 Canada.
SUBSERIES 14 CANADIAN NATIONAL
B-6 Bessemer and Lake Erie.
B-6 Central Vermont.
B-6 Detroit and Toledo Shore Line.
B-6 Detroit, Toledo and Ironton.
B-6 Gulf, Mobile and Ohio.
B-6 Illinois Central.
SUBSERIES 15 CANADIAN PACIFIC
B-6 General documents.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-6 Chicago, Milwaukee, St. Paul and Pacific.
B-6 Delaware and Hudson.
B-6 Soo Line.
SUBSERIES 16 CARRIER SYSTEMS
B-6 1940-1959.
B-6 1960-1989.
SUBSERIES 17 CHICAGO AND WESTERN INDIANA - BELT RAILWAY OF CHICAGO
B-6 General documents.
SUBSERIES 18 CHICAGO SIGNALING CLUB
B-7 General documents.
SUBSERIES 19 CIRCUIT CONTROLLERS
B-7 General documents.
SUBSERIES 20 CODE CONTROL SYSTEMS
Pictures (black and white photograph: "General Railway Signal Company B-7 Data Tran Test Set").
B-7 General documents.
Subsubseries 20.1 Union Switch and Signal I
B-7 1930-1939.
B-7 1940-1944.
B-7 1945-1949.
Subsubseries 20.2 General Railway Signal I
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-7 1950-1957.
B-7 1958-1959.
Subsubseries 20.3 Union Switch and Signal II
B-7 1950-1955.
B-8 1956-1959.
Subsubseries 20.4 General Railway Signal II
B-8 1960-1965.
B-8 1966-1969.
Subsubseries 20.5 Union Switch and Signal III
B-8 1960-1969.
Subsubseries 20.6 General Railway Signal III
B-8 1970-1975.
B-8 1976-1979.
Subsubseries 20.7 Union Switch and Signal IV
B-8 1970-1979.
B-8 1980-1989.
Subsubseries 20.8 General Railway Signal IV
B-8 1980-1982, 1984.
B-8 1983.
B-9 1986.
B-9 1988.
B-9 January 1989.
B-9 March-December 1989.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Subsubseries 20.9 Union Switch and Signal V
B-9 1980-1984.
B-9 1990-1999.
SUBSERIES 21 COMMUNICATIONS
B-9 General documents.
B-9 1930-1969.
B-9 1970-1988.
B-9 1990.
B-9 1991-1999.
SUBSERIES 22 COMMUNICATIONS AND SIGNALS
B-10 1946-1959.
B-10 1960-1969.
B-10 1970-1979.
B-10 1980-1989.
B-10 1990-1999.
B-10 Railway Age Buyers Guides, 1990-2004.
B-10 2000-2004.
SUBSERIES 23 COMPUTERS
B-10 1959-1969.
B-10 1970-1979.
B-10 1980-1989.
B-10 1990-1993.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-10 1994-1999.
B-10 2000-2004.
SUBSERIES 24 COMPUTERS, MICROPROCESSORS
B-10 1970-1988.
B-10 1989
B-10 1990-1999.
SUBSERIES 25 CONRAIL
B-11 1976-1989.
B-11 1990-2000.
B-11 Cleveland, Cincinnati, Chicago, and St. Louis.
B-11 Lehigh Valley
B-11 Michigan Central
B-11 Monongahela
B-11 New York Central, 1850-1909.
B-11 New York Central, 1910-1999.
B-11 New York, New Haven and Hartford.
B-11 Pennsylvania I.
B-11 Pennsylvania II.
B-11 Pennsylvania III.
B-11 Penn Central.
SUBSERIES 26 CONSTRUCTION
B-12 General documents.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 27 CONSULTANTS
B-12 General documents.
SUBSERIES 28 CONTROLLERS
B-12 General documents.
SUBSERIES 29 CORNING GLASS WORKS
B-12 Corning Glass Works.
SUBSERIES 30 CSX
General documents.
B-12 Atlantic Coast Line.
Subsubseries 30.1 Baltimore and Ohio
B-12 General documents.
B-12 1910-1919.
B-12 Baltimore and Ohio Centennial Exhibition, 1927.
B-12 1950-1959.
B-12 Buffalo, Rochester and Pittsburgh.
B-12 Chesapeake and Ohio.
B-12 Chicago, Indianapolis and Louisville.
B-12 Clinchfield.
B-12 Louisville and Nashville.
B-12 Nashville, Chattanooga and St. Louis.
B-12 Pere Marquette.
10 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-12 Pittsburgh and Lake Erie.
B-12 Richmond, Fredericksburg and Potomac.
B-12 Seaboard Air Line.
SUBSERIES 31 DERAILS
B-13 General documents.
SUBSERIES 32 DESIGN: CIRCUITS AND SYSTEMS
B-13 General documents. Communications and Signals, Association of American Railroads, Typical B-13 Signal Circuits Representing Current Practice, 1971.
B-13 Fail Safe Circuits, 1987.
B-13 Fail Safe Circuits, 1988.
SUBSERIES 33 DETECTORS
B-13 Pictures (black and white/color photographs).
B-13 1883.
B-13 1930-1979.
B-13 1980-1989.
B-13 1990-1999.
B-13 2000-2004.
B-13 Clearance (High-Wide Load).
B-13 Communications.
B-13 Dragging Equipment.
High-Wide Load Dragging Equipment (color/black and white photographs B-13 and slides).
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-13 Flood, High Water.
B-13 Ground.
SUBSERIES 34 DETECTORS, HOT BEARING
B-14 Pictures (black and white/color photographs and slides).
B-14 General documents.
B-14 1950-1959.
B-14 1960-1964.
B-14 1965-1969.
B-14 1970-1974.
B-14 1975-1979.
B-14 1980-1981.
B-15 General Railway Signal, 1982.
B-15 Servo Corporation, 1982.
B-15 1982-1984.
B-15 1985-1987.
B-15 1988-1989.
B-15 1990-1994.
B-15 2000-2004.
B-15 Tests of Hot Bearing Detectors, November 1988. Tests of Hot Bearing Detectors, Compatibility with Freight Car Trucks, B-15 1988-1998. Communications and Signals, Mechanical Divisions, Association of B-15 American Railroads Ad Hoc Task Force on Hot Bearing Detectors (Freight Car Truck Compatibility), May 1986-1987.
Subsubseries 34.1 Freight Car Truck Compatibility
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-16 June-September 1987.
B-16 Volume III, October 1987-April 1988.
B-16 Volume IV, May-June 1988.
B-16 Volume V, July-December 1988.
B-16 Specification Test, 1989.
B-16 Bearings, 1930-1939.
B-16 Bearings, 1940-1949.
B-16 Bearings, 1950-1959.
B-16 Bearings, 1960-1974.
B-16 Bearings, 1975-1989.
B-16 Bearings, 1990-1999.
B-16 Bearings, 2000-2004.
B-16 Freight Car Trucks, general.
Subsubseries 34.2 Car Presence
B-16 1930-1979.
B-16 1980-.
B-16 Slide Fence, Rock Fall.
B-16 Trucks.
Subsubseries 34.3 Wheel Condition
B-16 1950-1979.
B-16 1980-1998.
SUBSERIES 35 GEORGE B. DUTTON, JR., TRANSPORTATION CONSULTANT
B-17 General documents.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 36 ECONOMICS
B-17 1870-1949.
B-17 1950-2004.
SUBSERIES 37 T.A. EDISON COMPANY, MCGRAW-EDISON
B-17 General documents.
SUBSERIES 38 EDUCATION AND TRAINING
B-17 1840-1899.
B-17 1900-1969.
B-17 Data Sheets, Communication and Testing, July 1962-July 1970.
B-17 1970-1979.
B-18 1980-1989.
B-18 1990-1999.
B-18 2000-2004.
B-18 Signal Training Bulletins: The Signalman's Journal, 1978-1979.
SUBSERIES 39 ELECTRIFICATION
B-18 1930-1969.
B-18 1970-1974.
B-18 1975-1979.
B-18 1980-1989.
B-18 1990-2004. Transportation Research Board Committee A2MO2 (Electrification and B-19 Train Control Systems).
14 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents ELECTROMAGNETIC (COMPATIBILITY - ELECTROMAGNETIC SUBSERIES 40 INTERFERENCE)
B-19 1906, 1957.
B-19 1960-1969.
B-19 1970-1979.
B-19 1980-1082.
B-19 1983.
B-19 1984-1989.
B-19 1990-1999.
B-19 2000-2004.
SUBSERIES 41 ELECTRONICS
B-19 Electronics.
SUBSERIES 42 ELGIN, JOLIET AND EASTERN
B-19 General documents.
SUBSERIES 43 ENVIRONMENT
B-19 General documents.
SUBSERIES 44 ENRICO
B-19 Enrico.
SUBSERIES 45 EXIDE, ELECTRIC STORAGE BATTERY COMPANY
B-19 General documents.
B-19 Exide Railway Products, 1987.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 46 FEDERAL RAILROAD ADMINISTRATION
B-20 1960-1969.
B-20 1970-1979.
B-20 1980-1985.
B-20 1986-1989.
B-20 1990-1994.
B-20 Safety Laws and Regulations, 1994.
B-20 1995-1996.
B-20 1997-1999.
B-20 2000-2004.
Subsubseries 46.1 Railway Safety Advisory Committee
B-20 1995-1999.
B-20 2000-2004.
SUBSERIES 47 FEDERAL SIGNAL COMPANY
B-20 General documents.
SUBSERIES 48 FLORIDA EAST COAST RAILROAD
B-20 General documents.
SUBSERIES 49 FOUNDATIONS
B-20 1890-1989.
B-20 1990-1999.
B-20 2000-2005.
16 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 50 GENERAL ELECTRIC COMPANY
B-20 General documents.
SUBSERIES 51 GENERAL ELECTRIC TRANSPORTATION SYSTEMS
B-20 Global Signaling.
B-20 General Electric Harris-Harmon Railway Technology.
Subsubseries 51.1 Harmon Industries
B-20 Electronics, 1960-1979.
B-20 1980-1989.
B-21 1990-1999.
B-21 2000.
Subsubseries 51.2 Global Signaling
B-21 Electro-Pneumatic Corporation.
B-21 Seervo Corporation of America.
SUBSERIES 52 GENERAL RAILWAY SIGNAL COMPANY ( ALSTOM SIGNALING)
B-21 Predecessor Firms, 1899.
B-21 1900-1909.
B-21 1910-1919.
B-21 1920-1929.
B-21 1930-1939.
B-21 1940-1949.
B-21 1950-1959.
17 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-21 1960-1969.
B-21 1970-1979.
B-21 1980.
B-21 1981-1982.
B-21 1983-1989.
B-21 1990-1993.
B-21 1994-1999.
B-21 Taylor Signal Company.
B-21 2000-2004.
SUBSERIES 53 GUILFORD TRANSPORTATION (BOSTON AND MAINE)
B-21 General documents.
SUBSERIES 54 HISTORY
B-21 1894-1995.
American Railway Signaling Principles and Practices, Chapter One: B-22 November 1952.
Subsubseries 54.1 Railway Signaling and Communications
B-22 1908-1975.
Magazine Issues: May 1933, November 1950, April B-22 1958, January 1970, April 1970, November-December 1973.
B-22 Marketing.
B-22 Signaling, History, 1860-2004.
SUBSERIES 55 HOUSINGS, BUNGALOWS
18 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Pictures (color photograph and slide: "Bungalow, September 1969, B-22 (instrument house) Baltimore and Ohio - Paul Brannen").
B-22 1871-1949.
B-22 1950-1979.
B-22 1980-2001.
SUBSERIES 56 HUMAN FACTORS
B-22 1870-1889.
B-22 1900-1979.
B-22 1980-2001.
SUBSERIES 57 INDIANA HARBOR BELT
B-22 General documents.
SUBSERIES 58 INDICATORS
B-22 General documents.
SUBSERIES 59 INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS
B-22 Catalogues, 1999, 2000.
Institute of Electrical and Electronic Engineers/American Society of B-22 Mechanical Engineers Joint Railroad Conference.
SUBSERIES 60 INSULATED JOINTS
B-22 1860-1939.
B-22 1940-1969.
B-22 1970-1989.
B-22 1990-1999.
19 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 61 INTERSTATE COMMERCE COMMISSION
B-22 1900-1929.
B-22 1930-1939.
B-23 1940-1949.
B-23 1950-1959.
B-23 1980-1999.
B-23 Block Signal and Train Control Board Reports, 1908-1912.
B-23 Block Signal and Train Control Board, 1900-1919.
Subsubseries 61.1 Bureau of Safety
B-23 1910-1919.
B-23 1920-1929.
B-23 1930-1939.
B-23 1940-1949.
B-23 1950-1959.
B-23 1960-1969.
SUBSERIES 62 J and A INDUSTRIES
B-24 General documents.
SUBSERIES 63 KANSAS CITY SOUTHERN
B-24 General documents.
SUBSERIES 64 KERITE COMPANY
B-24 General documents.
20 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 65 LABOR
B-24 1890-1969.
B-24 Presidential Emergency Board, No. 219, (1 May 1990).
B-24 1970-2003.
SUBSERIES 66 LAMPS
Picture (black and white photograph: "Dr. H.P. Gage signing sample B-24 glasses of light and dark color limits selected by the American Association of Railroads Committee UI of signal section for Railroad use, 1953").
B-24 1850-1909.
B-24 1910-1969.
B-24 1970-2002.
SUBSERIES 67 LENSES
B-24 General documents.
SUBSERIES 68 LEGISLATION, FEDERAL (UNITED STATES)
B-24 1900-1979.
B-24 1980-1999.
SUBSERIES 69 LINE WIRE CONTROLS
B-24 General documents.
SUBSERIES 70 LOCKS, LOCKING
B-24 Pictures (black and white/color photographs and slides).
21 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-24 Locking, general.
B-24 Electric Locking.
B-24 Mechanical Locking.
SUBSERIES 71 LOCOMOTIVES
B-24 General documents.
SUBSERIES 72 L and W INDUSTRIES
B-24 General documents.
SUBSERIES 73 MAINTENANCE
B-24 Pictures (black and white/color photographs and slides).
B-25 1880-1899.
B-25 1900-1919.
B-25 1920-1949.
B-25 1950-1969.
B-25 1970-1979.
B-25 1980-1989.
B-25 1990-2004.
C and S: Track American Railway Engineering and Maintenance of Way B-25 Association Seminar, September 10, 2000
SUBSERIES 74 MAINTENANCE OF WAY
B-25 General documents.
SUBSERIES 75 MILLER TRAIN CONTROL CORPORATION
22 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-25 General documents.
SUBSERIES 76 MISCELLANEOUS
B-25 1890-1999.
B-25 2000-2005.
SUBSERIES 77 MONITORS, EVENT RECORDERS
B-25 1800-1989.
SUBSERIES 78 NATIONAL TRANSPORTATION SAFETY BOARD
B-25 1960-1999.
B-25 2000-2004.
SUBSERIES 79 NEW YORK, ONTARIO AND WESTERN
B-25 General documents.
SUBSERIES 80 NORFOLK SOUTHERN
B-25 Central of Georgia.
B-25 New York, Chicago, and St. Louis.
B-25 Norfolk and Western
B-25 Southern
B-26 Virginian
B-26 Wabash
SUBSERIES 81 OKONITE COMPANY
B-26 Okonite Company
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 82 PASSENGER OPERATIONS
B-26 1920-1999.
B-26 2000-2005.
Subsubseries 82.1 Commuter Rail
B-26 1950-1999.
B-26 2000-2003.
B-26 Accidents.
Boston, Massachusetts (Massachusetts Bay Transit B-26 Authority).
B-26 Chicago, Illinois (METRA).
B-26 Los Angeles, California.
B-26 Long Island Railroad.
B-26 Long Island Railroad: Signal Engineering Operations.
B-26 Metro North Railroad: New York City.
B-26 New Jersey Transit: Central Railroad of New Jersey. New Jersey Transit: Delaware, Lackawanna and B-26 Western. B-26 New Jersey Transit: Erie, Erie-Lackawana.
B-26 New Jersey Transit: New York and Long Branch.
New Jersey Transit: Pennsylvania Reading Seashore B-26 Lines.
B-26 New Jersey Transit: San Francisco, California. Southeastern Philadelphia, Pennsylvania Transport B-26 Authority. Southeastern Philadelphia, Pennsylvania Transport B-26 Authority: Reading. B-26 Washington, D.C. to Virginia, Maryland.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Subsubseries 82.2 Federal Transit Administration
B-26 General documents.
Subsubseries 82.3 High Speed Rail
B-27 1930-1989.
B-27 1990-1991.
B-27 1992.
B-27 1993.
B-27 1994.
B-27 1995-1996.
B-27 1997.
B-27 1998-1999.
B-27 2000-2003.
Subsubseries 82.4 Light Rail Transit
B-27 Pictures (color photographs).
B-27 1880-1899.
B-27 1900-1909.
B-27 1910-1919.
B-27 1920-1989.
B-27 1990-1993.
B-27 1994-1997.
B-27 1998.
B-27 1999.
B-27 2000-2009.
25 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-28 Accidents.
B-28 Signaling.
B-28 Baltimore, Maryland.
B-28 Boston, Massachusetts.
B-28 Buffalo, New York.
B-28 Calgary, Alabama.
B-28 Chicago, Illinois.
B-28 Cleveland, Ohio.
B-28 Dallas, Texas.
B-28 Denver, Colorado.
B-28 Edmonton, Alabama.
B-28 Houston, Texas.
B-28 Los Angeles, California.
B-28 Newark, New Jerseys.
B-28 New York, New York.
B-28 Pittsburgh, Pennsylvania.
B-28 Portland, Oregon.
B-28 Sacramento, California.
B-28 St. Louis, Missouri.
B-28 Salt Lake City, Utah.
B-28 San Diego, California.
B-28 San Francisco-Oakland, California.
B-28 Toronto, Ontario.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-28 Vancouver, British Columbia.
B-28 Washington, D.C.
Subsubseries 82.5 Rail Transit Pictures (black and white/color photographs and B-28 slides). B-28 1900-1969.
B-28 1970-1975.
B-28 1976-1979.
B-28 1980-1989.
B-28 1990-1994.
B-28 1995.
B-28 1996-1997.
B-29 1998-1999.
B-29 2000-2004.
B-29 Accidents, 1880-1989.
B-29 Accidents, 1990-1999.
B-29 American Public Transportation Association. Institute of Electrical and Electronics Engineers B-29 Standards. B-29 Signaling.
B-29 Atlanta, Georgia.
B-29 Atlanta, Georgia (Automatic Train Control, July 1985).
Atlanta, Georgia (Audio Frequency Train Detection, B-29 August 1986). Atlanta, Georgia (Automatic Train Control, January B-29 1988.
27 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Baltimore, Maryland - Pictures (color photograph: B-29 "Maryland Transit Association, Baltimore, Maryland, June 1988").
B-29 Baltimore, Maryland.
B-29 Baltimore, Maryland (Automatic Train Control, 1987).
B-30 Baltimore, Maryland (Automatic Train Control, 1990).
B-30 Bay Area Rapid Transit (BART), 1950-1969.
B-30 Bay Area Rapid Transit (BART), 1970-1979. Bay Area Rapid Transit (BART), 1980 (Book: Divided B-30 Loyalty). B-30 Bay Area Rapid Transit (BART), 1980-1993.
B-30 Bay Area Rapid Transit (BART), 1994-1999.
B-30 Bay Area Rapid Transit (BART), 2000-2003. Bay Area Rapid Transit (BART), General Railway B-30 Signal Automatic Train Control, 1960s. Bay Area Rapid Transit (BART), General Railway B-30 Signal, Automatic Train Control. Bay Area Rapid Transit (BART), Union Switch and B-30 Signal, Automatic Train Control. Bay Area Rapid Transit (BART), Westinghouse Electric B-30 ATC. Boston, Massachusetts, pictures (black and white/color B-30 photographs and slides). B-30 Boston, Massachusetts.
B-30 CA Westinghouse Chicago, Illinois, pictures (black and white/color B-31 photographs, 1966, 1969). B-31 Chicago, Illinois, 1950-2002.
B-31 Cleveland, Ohio. Hudson and Manhattan (New Jersey - New York), B-31 pictures (black and white photograph, early 1900s). B-31 Los Angeles, California.
28 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-31 Miami, Florida.
B-31 Montreal, Quebec New York City Transit Authority pictures (black and B-31 white photographs, 1950-1956). B-31 New York City Transit Authority, 1870-1899.
B-31 New York City Transit Authority, 1900-1909.
B-31 New York City Transit Authority, 1910-1929.
B-31 New York City Transit Authority, 1920-1939.
B-31 New York City Transit Authority, 1940-1949.
B-31 New York City Transit Authority, 1950-1959.
B-31 New York City Transit Authority, 1960-1962.
B-31 New York City Transit Authority, 1963-1969.
B-31 New York City Transit Authority, 1970-1979.
B-31 New York City Transit Authority, 1980-1989.
B-31 New York City Transit Authority, 1990-1996.
B-31 New York City Transit Authority, 1997.
B-31 New York City Transit Authority, 1998-2004. Delaware River Port Authority (PATCO), New Jersey - B-31 Pennsylvania. B-31 Port Authority Trans-Hudson (PATH).
B-31 Staten Island Rapid Transit (SIRT). Toronto, Ontario Transit Commission, pictures (black B-31 and white photographs, 1966-1971). B-31 Toronto, Ontario Transit Commission. Washington, D.C., Maryland, Virginia (WMATA), B-32 pictures (black and white photographs).
B-32 Washington, D.C., Maryland, Virginia (WMATA), 1969.
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SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Washington, D.C., Maryland, Virginia (WMATA), 1970- B-32 1979. Washington, D.C., Maryland, Virginia (WMATA), 1980- B-32 2004.
SUBSERIES 83 PATENTS, GENERAL
B-32 General documents.
B-32 Philadelphia Rapid Transit Company.
SUBSERIES 84 PEOPLE
Pictures (black and white photographs and slides: Charles C. Minot, B-32 Superintendent of Erie Railway; Wm Robinson, track circuit inventor; and Samuel Findley Breese Morse).
B-32 General documents. .
SUBSERIES 85 POLE LINES
B-32 1870-1959.
B-32 1960-2004.
B-32 Manual Part 1-A-4, C and S, Association of American Railroads, 1997.
B-32 Manual Part 1-A-6, C and S, Association of American Railroads, 1997. Manual Part 1-A-7 through 1-A-20, C and S, Association of American B-32 Railroads, 1997. Manual Part 1-A-24 through 1-A-75, C and S, Association of American B-32 Railroads, 1997. Manual Parts 1-B-1, 1-B-3, C and S, Association of American Railroads, B-32 1997. B-32 Manual Parts 1-D-9, 1-E-1, 1-E-2, 1-E-10, C and S, 1997.
SUBSERIES 86 POWER DISTRIBUTION AND SUPPLY
Pictures (black and white photograph: Power Switchboards and Motor B-32 Generator Sets at an Interlocking station, 1950).
30 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-32 1900-1939.
B-32 1940-1969.
B-32 1970-1989.
B-32 1990-2004.
Subsubseries 86.1 Batteries
B-32 Pictures (color photographs). Batteries, diagrams/black and white photographs, B-32 1948. B-32 1880-1919.
B-33 1920-1939.
B-33 1940-1959.
B-33 1960-1969.
B-33 1970-1989.
B-33 1990-1994.
B-33 1995-1999.
B-33 2000-2004.
B-33 Chargers, diagrams/illustrations, 1948.
B-33 Chargers, 1900-1979.
B-33 Maintenance.
B-33 Solar Power.
SUBSERIES 87 QUEBEC, NORTH SHORE AND LABRADOR
B-33 General documents.
SUBSERIES 88 RADIO
31 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-33 1940-1969.
B-33 1970-1989.
B-33 1990-1995.
B-33 1996-2003.
Subsubseries 88.1 Federal Communications Commission
B-34 December 1945, November 1994.
B-34 November 6, 1992.
B-34 July 19, 1995.
SUBSERIES 89 RAILROAD SIGNAL INCORPORATED
B-34 General documents.
SUBSERIES 90 RAILS COMPANY
B-34 General documents.
SUBSERIES 91 RAILWAY SIGNAL ASSOCIATION
B-34 1890-1909.
B-34 1910-1911.
B-34 1912-1914.
B-34 1914-1919.
SUBSERIES 92 RAILWAY SIGNALING CLUB
B-34 1890-1899.
B-34 1900-1902.
B-34 1903-1909.
32 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 93 RAILWAY SYSTEM SUPPLIERS INCORPORATED
B-34 1960-1989.
B-34 1990-1995.
B-34 1996-1999.
B-34 2000-2004.
B-34 Signal Appliance Association.
SUBSERIES 94 RECTIFIERS
B-34 1909-1929.
B-34 1930-1939.
B-34 1940-1949.
B-34 1950-1959.
B-34 1960-1999.
SUBSERIES 95 RELAYS
B-34 1900-1909.
B-35 1910-1919.
B-35 1920-1929
B-35 1930-1939.
B-35 1940-1949.
Alternating Current, Pictures (black and white photographs and B-35 illustrations, 1951).
B-35 1950-1954.
B-35 1955-1959.
33 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-35 1960-1969.
B-35 1970-1979.
B-35 1980-1984.
B-35 1985-1989.
B-35 1990-1994.
B-35 1995-1999.
B-35 2000-2003.
SUBSERIES 96 RELAY TIMERS
B-35 General documents.
SUBSERIES 97 RELAY RACKS
B-36 General documents.
SUBSERIES 98 RESEARCH
B-36 1920-1989.
B-36 1990-1999.
B-36 2000-2004.
SUBSERIES 99 RESISTORS
B-36 General documents.
SUBSERIES 100 ROLLING STOCK
B-36 General documents.
SUBSERIES 101 SAFETRAN SYSTEMS CORPORATION
34 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-36 Safetran Systems Corporation.
B-36 Cheatham Electric Switching Device Company.
B-36 Nachod and US Signal Company.
Subsubseries 101.1 Railroad Accessories Corporation
B-36 General documents.
B-36 Railroad Accessories Corporation, 1960s.
B-36 Signal Accessories Corporation.
SUBSERIES 102 SAFETY
B-36 1840-1969.
B-36 1970-1979.
B-36 1980-1989.
B-36 1990-1995.
B-36 1996 (February United States House and Senate Hearings).
B-36 1996 (March United States House and Senate Hearings).
B-36 1996-1999.
B-37 2000-2003.
SUBSERIES 103 SAXBY AND FARMER
B-37 General documents.
SUBSERIES 104 SCIENCE APPLICATIONS INTERNATIONAL CORPORATION
B-37 General documents.
SUBSERIES 105 SHOPS
35 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-37 General documents, 1920-1999.
SUBSERIES 106 SIGNAL DEPARTMENTS (RAILROAD, INDIVIDUAL)
B-37 General documents.
SUBSERIES 107 SIGNAL HARDWARE
B-37 General.
B-37 Fasteners, Wires, Connectors.
B-37 Mechanical.
B-37 Terminals, General.
B-37 Terminals, AMP.
B-37 WAGO, 1995.
SUBSERIES 108 SIGNAL STRUCTURES (BRIDGES, CANTILEVERS, MASTS, POSTS)
B-37 General.
SUBSERIES 109 SIGNAL TOWERS
B-37 General.
SUBSERIES 110 SIGNALING
B-38 1850-1879.
B-38 1880-1889.
B-38 1890-1892.
B-38 1893.
B-38 1894-1895.
36 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-38 1896-1898.
B-38 1899.
B-38 1900-1905.
B-38 1906-1909.
B-38 1910-1919.
B-38 1920-1923.
B-38 1924-1929.
B-38 1930-1939.
B-38 1940-1943.
B-38 1944-1946.
B-38 1947-1949.
B-39 1950-1959.
B-39 1960-1969.
B-39 1970-1976.
B-39 1977-1979.
Subsubseries 110.1 Federal Railroad Administration Study
B-39 1978.
B-39 1979.
B-39 1980-1981.
B-39 1980-1989.
B-39 1990-1999.
B-39 2000-2009.
Subsubseries 110.2 Elements of Railway Signaling
37 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Elements of Railway Signaling, 1954, 1979; Railway B-40 Operations and Railway Signaling, 1953.
B-40 Elements of Railway Signaling, 1996.
Subsubseries 110.2 Absolute Permissive Block
Pictures (black and white photograph: "A 'meet' on the world's first installation of absolute permissive block B-40 signaling, Kinnear to Vinemount, Ontario, on the Toronto Hamilton and Buffalo Railway, 1911").
B-40 1910-1919.
B-40 1920-1949.
B-40 1950-1989.
Subsubseries 110.3 Alternating Current.
B-40 General. "Alternating Current Signaling," by author McCready, B-40 Union Switch and Signal, 1915 (photocopy). Subsubseries 110.4 Automatic Block Signaling.
B-40 1870-1889.
B-40 1890-1899.
B-40 1900-1904.
B-40 1905-1907.
B-40 1908-1909.
B-40 1910-1914.
B-40 1915-1919.
B-40 1920-1925.
B-41 1926-1929.
B-41 1930-1939.
B-41 1940-1945.
38 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-41 1946-1949.
B-41 1950-1959.
B-41 1960-1999.
Subsubseries 110.5 Block and Man Manual Block
Pictures (black and white photograph: "Origin and first B-41 set of rules for Manual Block System," Union Switch and Signal Company).
B-41 1860-1889.
B-41 1890-1893.
B-41 1894-1899.
B-41 1900-1901.
B-41 1902-1905.
B-41 1906-1909.
B-41 1910-1989.
Subsubseries 110.6 Centralized Traffic Control
B-41 Pictures (black and white/color photographs). Centralized Traffic Control Machine, pictures (black B-41 and white/color photographs). B-42 General.
B-42 1920-1929.
B-42 1930-1931.
B-42 1932-1936.
B-42 1937-1939.
B-42 1940-1942.
B-42 1943-1944.
B-42 1945.
39 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-42 1946.
B-42 1947.
B-42 1948.
B-42 1949.
B-42 1950.
B-42 1951.
B-43 1952.
B-43 1953.
B-43 1954.
B-43 1955.
B-43 1956.
B-43 1957.
B-43 1958.
B-43 1959.
B-43 1960-1961.
B-43 1962-1969.
B-43 1970-1974.
B-43 1975-1977.
B-43 Union Pacific Consolidation, January 1978.
B-44 1978-1979.
B-44 1980-1982.
B-44 1983-1989.
B-44 1990-2004.
40 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Subsubseries 110.7 Construction (Review and Outlook)
B-44 1890-1919.
B-44 1920-1924.
B-44 1925-1929.
B-44 1930-1939.
B-44 1940-1949.
B-44 1950-1959.
B-44 1960-1969.
B-44 1970-1979.
Subsubseries 110.8 Interlockings Pictures (black and white/color photographs, B-44 photocopies of photographs, and illustrations). B-44 1850-1879.
B-45 1880-1884.
B-45 1885-1889.
B-45 1890-1893.
B-45 1894-1895.
B-45 1896-1897.
B-45 1898-1899.
B-45 1900-1901.
B-45 1902-1909.
B-45 1910-1919.
B-45 1920-1929.
B-45 1930-1939.
41 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-45 1940-1944.
B-45 1945-1949.
B-45 1950-1952.
B-45 1953-1959.
B-45 1960-1989.
B-45 1990-2002.
Subsubseries 110.9 Automatic Interlockings
B-45 1880-1939.
B-45 1940-1989.
Subsubseries 110.10 Bridge Interlockings
B-46 Pictures (diagrams, 1868, 1882).
B-46 1850-1899.
B-46 1900-1989.
B-46 1910-1914.
B-46 1990-1996.
B-46 1997-1999.
B-46 2000-2002.
B-46 2003-2004.
Subsubseries 110.11 Electric Interlocking
B-46 Pictures (black and white/color pictures and slides).
B-46 1870-1899.
B-46 1900-1905.
B-46 1906-1909.
42 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-46 1915-1919.
B-46 1920-1922.
B-46 1923-1929.
B-47 1930-1939.
B-47 1940-1949.
B-47 1950-1996.
Subsubseries 110.12 Electro-Mechanical Interlocking
B-47 1890-1926.
B-47 1927-1969.
Subsubseries 110.13 Electro-Pneumatic Interlocking Pictures (black and white/color photographs and B-47 diagrams). B-47 1880-1889.
B-47 1890-1899.
B-47 1900-1906.
B-47 1907-1909.
B-47 1910-1919.
B-47 1920-1929.
B-47 1930-1939.
B-47 1940-1992.
Subsubseries 110.14 Interlocking Maintenance
B-48 General.
Subsubseries 110.15 Mechanical Interlocking Pictures (black and white/color photographs and B-48 illustrations).
43 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-48 1875, 1880-1889.
B-48 1890-1899.
B-48 1900-1909.
B-48 1910-1919.
B-48 1920-1929.
B-48 1930-1999.
Subsubseries 110.16 Microprocessor Interlocking
B-48 1960-1985.
General Railway Signal Micro-processor Interlocks, B-48 Operations and Maintenance (1987). General Railway Signal Micro-processor Interlocks, B-48 User's Manual (1987).
B-48 1986-1989.
B-48 1990-1999.
B-48 2000-2002.
Subsubseries 110.17 Relay Interlocking
Pictures (black and white photograph: "Relay B-49 Interlocking at Camden Station, Baltimore and Ohio, March 1963, Baltimore, Maryland").
B-49 1930-1949.
B-49 1950-1969.
B-49 Conrail CP (367 Rochester, NY), 1956, 1994.
Subsubseries 110.18 Remote Control Interlockings
B-49 1910-1929.
B-49 1930-1989.
B-49 Conrail CP 367 - Rochester, NY
44 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Subsubseries 110.19 Signaling: Route Interlockings - Entrance/Exit
B-50 Pictures (black and white photographs).
B-50 1930-1939.
B-50 1940-1949.
B-50 1950-1959.
B-50 1960-1979.
B-50 1980-1999.
Subsubseries 110.20 Rules, Standards, and Instructions (RS&I)
B-50 Interstate Commerce Commission, 1930-1939.
B-50 Interstate Commerce Commission, 1940-1949.
B-50 Interstate Commerce Commission, 1950-1959.
B-50 Interstate Commerce Commission, 1960-1965.
Interstate Commerce Commission, January 24, 1966 B-50 "A" File.
Interstate Commerce Commission, January 24, 1966 B-50 "B" File.
B-50 Interstate Commerce Commission, 1966-1967.
B-50 Federal Railroad Administration, 1969-1978.
B-50 Federal Railroad Administration, 1979.
Federal Railroad Administration, February 22-23, 1979 B-51 "A" File. Federal Railroad Administration, February 22-23, 1979 B-51 "B" File. Federal Railroad Administration, RS&I, Association of B-51 American Railroads, February 1979. Federal Railroad Administration, RS&I, TSJ B-51 (Brotherhood of Railroad Signalmen), February 1979 (Report in the Signalman's Journal).
45 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-51 Federal Railroad Administration, RS&I, 1980-1983.
Federal Railroad Administration, RS&I, Association of B-51 American Railroads, 1980-1983. Federal Railroad Administration, RS&I, Association of B-51 American Railroads, 1981 "A" File. Federal Railroad Administration, RS&I, Association of B-51 American Railroads, 1981 "B" File. Federal Railroad Administration, RS&I, Association of B-51 American Railroads, 1981 "C" File.
Federal Railroad Administration, 49 Code of Federal B-51 Regulations (photocopies), Parts 223, 235, 1981-1984.
B-51 Federal Railroad Administration, RS&I, 1980-1983.
Federal Railroad Administration, RS&I, 1981-1984 #1 B-51 File.
B-51 Federal Railroad Administration, RS&I, 1982-1983
B-52 Federal Railroad Administration, RS&I, 1984
Federal Railroad Administration, RS&I, 1984 Notes B-52 "A" File. Federal Railroad Administration, RS&I, 1984 Notes B-52 "B" File. Federal Railroad Administration, RS&I, 1984 Notes B-52 "C" File. Federal Railroad Administration, RS&I, 1984 Notes B-52 "D" File. Federal Railroad Administration, RS&I, 49 Code of B-52 Federal Regulations (photocopies) Parts 236, 501+ "A" File (1982-1984). Federal Railroad Administration, RS&I, 49 Code of B-52 Federal Regulations (photocopies) Parts 236, 501+ "B" File (1982-1984). Federal Railroad Administration, RS&I, Technical B-52 Manuals 1995, 1997.
46 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Federal Railroad Administration, RS&I, 49 Code of B-52 Federal Regulations (photocopies) Parts 233-236, 1988-2000.
B-52 Federal Railroad Administration, RS&I, 1990-1999.
Federal Railroad Administration, RS&I, 49 Code of B-52 Federal Regulations (photocopies) Parts 200-399 (1 October 2000).
B-52 Federal Railroad Administration, RS&I, 2000-2009.
Federal Railroad Administration, Block Signal B-52 Applications, Waivers. Federal Railroad Administration, Processor Based B-53 Signal and Train Control, 2001 "A" File. Federal Railroad Administration, Processor Based B-53 Signal and Train Control, 2001 "B" File. Federal Railroad Administration, Processor Based B-53 Signal and Train Control, 2001 "C" File. Federal Railroad Administration, Processor Based B-53 Signal and Train Control, 2001 "D" File.
Subsubseries 110.21 In Service
B-53 1880-1909.
B-53 1910-1919.
B-53 1920-1929.
B-53 1930-1949.
B-53 1950-1959.
B-53 1960-1969.
B-53 1970-1979.
B-53 1980-1989.
B-53 1990-1999.
Subsubseries 110.22 Signal Units Joint Facilities
47 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-53 General.
Subsubseries 110.23 State Regulations
B-53 1850-1879.
B-53 1880-1889.
B-53 1890-1899.
B-53 1900-1999.
Subsubseries 110.24 Testing
B-53 General.
SUBSERIES 111 SIGNALS
Pictures (black and white/color photographs, photocopies of photographs, B-54 and illustrations).
B-54 1840-1879.
B-54 1880-1889.
B-54 1890-1899.
B-54 1900-1909.
B-54 1910-1939.
B-54 1940-1949.
B-54 1950-1989.
B-54 1990-2002.
Subsubseries 111.1 Aspects and Indications Pictures (color photograph and slide: "Train Operation, B-54 Signal Rules 281, 282, 285, 292"). B-54 1870-1899.
B-54 1900-1919.
B-54 1920-1939.
48 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-54 1940-1999.
Subsubseries 111.2 Audible
B-54 General, 1880-1899.
Subsubseries 111.3 Automatic
B-54 1870-1999.
Subsubseries 111.4 Ball Pictures (black and white/color photographs and B-55 illustrations). Subsubseries 111.5 Colorlight Pictures (black and white/color photographs and B-55 illustrations). B-55 1854-1929.
B-55 1930-1959.
B-55 1960-1979.
B-55 1980-1999.
Subsubseries 111.6 Color-Position-Light Pictures (black and white/color photographs: B-55 "Association of American Railroads Signal Principle and Practices, 1949"). B-55 1920-2002.
Subsubseries 111.7 Disc (Banjo) Pictures (black and white/color photographs and B-55 illustrations). B-55 1870-1959.
Subsubseries 111.8 Distant
B-55 1870-1920.
Subsubseries 111.9 Dwarf
49 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-55 1890-1989.
Subsubseries 111.10 False Proceed Failure Reports
B-55 1900-1949.
B-55 1950-1999.
Subsubseries 111.11 Position Light
B-55 Pictures (black and white/color photographs).
B-55 1910-1939.
B-55 1980-1999.
Subsubseries 111.12 Searchlight Pictures (black and white/color photographs, slides, B-55 and illustrations). B-55 1900-1949.
B-55 1950-1969.
B-55 1970-1999.
Subsubseries 111.13 Semaphore Pictures (black and white/color photographs, diagrams, B-55 and illustrations). Illustrations from American Railway Signaling B-56 Principles and Practices, 1930. B-56 1870-1889.
B-56 1890-1899.
B-56 1900-1909.
B-56 1910-1919.
B-56 1920-1929.
B-56 1930-1949.
B-56 1970-2004.
50 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Subsubseries 111.14 Time
B-56 1870-1899.
Subsubseries 111.15 Train Order Pictures (black and white/color photographs and B-56 slides). B-56 1870-1939.
Subsubseries 111.16 Tunnel
B-56 1890-1909.
SUBSERIES 112 SIGNS
B-56 1880-1899.
SUBSERIES 113 SOUTHERN SIGNAL COMPANY
B-56 General.
SUBSERIES 114 SUPPLIERS
B-56 1880-1899.
B-56 1900-2004.
SUBSERIES 115 SUPPLIERS, COMMUNICATIONS AND SIGNAL EXHIBITIONS
B-56 1880-1939.
SUBSERIES 116 SURFACE TRANSPORTATION BOARD
B-56 2000-2004.
SUBSERIES 117 SURGE PROTECTION
51 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Pictures (black and white photographs and illustrations: "Signal Power B-56 Transmission and Lighting Protection, 1959").
B-56 1880-1949.
B-56 1950-1969.
B-56 1970-1974.
B-56 1975-1979.
B-56 1980-1989.
B-57 1990-1997.
B-57 1998-1999.
B-57 2000-2009.
B-57 Arresters, 1900-1999.
B-57 Grounding, 1910-1999.
SUBSERIES 118 SWITCHES
B-57 1830-1899.
B-57 1900-2004.
Subsubseries 118.1 Switch Circuit Controller
Pictures (black and white photographs: "Number Seven Switch Circuit Controller, June 1953, Delaware B-57 and Hudson, Oneonta, New York, General Railway Signal).
B-57 1910-2004.
Subsubseries 118.2 Switches, Electric, Power
B-57 Pictures (black and white diagrams and illustrations).
B-57 1890-1949.
52 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-57 1950-1959.
B-57 1960-1979.
B-57 1980-1983.
B-57 1984-1986.
B-57 1987-1989.
B-57 1990-1999.
B-57 2000-2009.
Subsubseries 118.3 Switches, Electro-Pneumatic
Pictures (black and white photograph: "Hydro- Pneumatic Switch and Lock Movement at Bound B-57 Brook, New Jersey; installed 1883 at crossing of Philadelphia and Reading and Lehigh Valley Railroads").
B-57 1880-1939.
B-57 1940-2004.
Subsubseries 118.4 Switches, Facing Point Locks
B-58 1880-1979.
Subsubseries 118.5 Switches, Hand-Throw
B-58 1840-2004.
Subsubseries 118.6 Switches, Hardware
B-58 1880-2004.
Subsubseries 118.7 Switches, Heaters and Snow Removal
53 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-58 1880-2004.
Subsubseries 118.8 Switches, Heaters, Air
B-58 1950-2004.
Subsubseries 118.9 Switches, Heaters, Electric
B-58 1910-2004.
Subsubseries 118.10 Switches, Heaters, Oil, Gas
B-58 1900-2004.
Subsubseries 118.11 Switches, Snow Detectors
B-58 1952-2004.
Subsubseries 118.12 Switches, Indicators
B-58 1830-1999.
Subsubseries 118.13 Switches, Lighting, Electric Lamps
B-58 1890-1969.
Subsubseries 118.14 Switches, Locking
B-58 1870-2004.
B-58 General Railway Signal, 1910-1999.
B-58 Union Switch and Signal, 1920-1999
Subsubseries 118.14 Switches, Maintenance
54 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-58 1880-1999.
Subsubseries 118.15 Switches, Spring
Pictures (color photographs: "Spring Switch, Erie B-58 Lackawanna, Cortland, New York, July, 1973 - Paul Brannen").
B-58 1850-2004.
SUBSERIES 119 TEST EQUIPMENT
B-58 1910-1999.
SUBSERIES 120 TESTS AND TESTING
B-58 1900-1949.
B-59 1950-1979.
B-59 1980-1999.
SUBSERIES 121 TIME RELEASE
B-59 1909-2004.
SUBSERIES 122 TRACK
B-59 1840-1989.
B-59 1990-1999.
B-59 2000-2004.
SUBSERIES 123 TRACK BUYER'S GUIDES
B-59 2000-2001.
B-59 2001-2005.
55 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 124 TRACK CIRCUITS
B-59 Pictures (color diagrams).
B-59 1870-1929.
B-59 1930-1949.
B-59 1950-1969.
B-60 1970-1989.
B-60 1990-2004.
Subsubseries 124.1 Alternating Current
B-60 1900-1999. Alternating Current, 1951, pictures (photocopies of B-60 illustrations and diagrams). Subsubseries 124.2 Alternating Current-Direct Current
B-60 1980-1989.
Subsubseries 124.3 Direct Current
B-60 1870-1999.
B-60 Union Switch and Signal, 1949.
B-60 Invention of DC Track Circuit, 1872.
Subsubseries 124.4 Coded
B-60 1930-1939.
B-60 General Railway Signal, 1930-1949.
B-60 General Railway Signal, 1950-1969.
B-60 General Railway Signal, Trakode II, 1970-1989.
B-60 General Railway Signal, Gerakode, 1980-1989.
B-60 General Railway Signal, 1990-2004.
56 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Subsubseries 124.5 Coded Harmon
B-60 1970-1979.
B-61 1980-1989.
B-61 1990-2004.
Subsubseries 124.6 Coded Safetran
B-61 1970-1999.
Subsubseries 124.7 Coded Union Switch and Signal
B-61 1930-1979.
B-61 September 1942.
B-61 June 1985.
B-61 1980-2004.
Subsubseries 124.8 Hardware
B-61 1930-1999.
Subsubseries 124.9 High Frequency
B-61 1960-1989.
Subsubseries 124.10 Overlay (Audio Frequency)
B-61 1950-1969.
B-61 1970-1978.
B-61 1979.
B-61 Union Switch and Signal, 1972-1984.
B-62 1980-1984.
B-62 1985-1989.
Subsubseries 124.11 Phase Selective
57 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-62 1966-1999.
Subsubseries 124.12 Type C
B-62 1970-1989.
Subsubseries 124.13 Testing
B-62 1920-1999.
SUBSERIES 125 TRACK MOTOR CARS
B-62 1880-1992.
SUBSERIES 126 TRAIN CONTROL
B-62 1880-1990.
Subsubseries 126.1 Advanced Train Control System
B-62 1984.
B-62 January-August, 1985.
B-62 September-December, 1985.
B-62 January-March, 1986.
B-62 April-December, 1986.
B-62 January-June, 1987.
B-62 July-December, 1987.
B-62 January-March, 1988.
B-62 April-December, 1988.
B-62 January-March, 1988.
B-62 April-December, 1988.
B-62 January-March, 1989.
58 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-62 April-December, 1989.
B-63 January-June, 1990.
B-63 July-December, 1990.
B-63 January-March, 1991.
B-63 May-June, 1991.
B-63 August-December, 1991.
B-63 1992.
B-63 1993.
Component Specification Drafting Committee, B-63 September 27, 1993 ("A" File). Component Specification Drafting Committee, B-63 September 27, 1993 ("B" File).
B-63 1994
B-63 1995-2001.
B-63 Control Flows "A" File.
B-63 Control Flows "B" File.
B-63 Control Flows "C" File.
B-63 Control Flows "D" File.
B-64 Control Flows "E" File.
B-64 Control Flows "F" File.
Federal Railroad Administration Rules, Standards, and B-64 Instructions "A" File. Federal Railroad Administration Rules, Standards, and B-64 Instructions "B" File. Federal Railroad Administration Rules, Standards, and B-64 Instructions "C" File.
B-64 Specifications, 100, 110, 130.
59 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-64 Specifications, 140,160.
B-64 Specifications, 200 "A" File.
B-64 Specifications, 200 "B" File.
B-64 Specifications, 200 "C" File.
B-64 Specifications, 200 "D" File.
B-64 Specifications, 210, 220, 225.
B-64 Specifications, 250 "A" File.
B-64 Specifications, 250 "B" File.
B-64 Specifications, 250 "C" File.
B-64 Specifications, 300, 310, 311, 320, 335.
B-65 Specifications, 400.
B-65 Specifications, 500, 530.
B-65 Specifications, 600, 610, 620.
B-65 Specifications, 700.
B-65 Specifications, 800.
Subsubseries 126.2 Automatic Train Control
B-65 1870-1909.
B-65 1910-1919.
B-65 1920-1921.
B-65 1922.
B-65 Interstate Commerce Commission, 1920-1922.
B-65 American Railway Association, 1921-1922.
B-65 1923.
60 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-65 1924.
B-65 Interstate Commerce Commission, 1923-1924.
B-66 1925.
B-66 American Railway Association, May 1925.
B-66 American Railway Association, June 1925.
B-66 American Railway Association, July 1925.
B-66 American Railway Association, August 1925. American Railway Association, September- October B-66 1925. B-66 American Railway Association, November 1925.
B-66 American Railway Association, December 1925. Interstate Commerce Commission, American Railway B-66 Association, 1925. B-66 Interstate Commerce Commission, 1925-1926.
B-66 1926. Interstate Commerce Commission, American Railway B-66 Association, January 1926. B-66 American Railway Association, January 1926.
B-67 American Railway Association, February 1926.
B-67 American Railway Association, March 1926.
B-67 American Railway Association, April 1926. Interstate Commerce Commission, American Railway B-67 Association, April 1926. Interstate Commerce Commission, American Railway B-67 Association, May 1926. B-67 American Railway Association, May-June 1926.
B-67 American Railway Association, July 1926. Interstate Commerce Commission, American Railway B-67 Association, July 1926.
61 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents American Railway Association, August- September B-67 1926. Interstate Commerce Commission, American Railway B-67 Association, August 1926. Interstate Commerce Commission, American Railway B-67 Association, October 1926. B-67 American Railway Association, November 1926. Interstate Commerce Commission, American Railway B-67 Association, November 1926. B-67 American Railway Association, December 1926.
B-67 1927.
B-68 1928.
B-68 Interstate Commerce Commission, 1927-1929.
B-68 1929.
Book: Reports/Orders of the Interstate Commerce Commission: In the Matter of Automatic Train Control B-68 Device: Docket# 13413, 1931 (Removed to John W. Barriger III National Railroad Library).
Book: Automatic Train Control: Early Development, Tests, Types of Devices, Interstate Commerce Commission Orders and Present Situation: Bulletin of B-68 Committee on Automatic Train Control, American Railway Association, November 1930 (Bulletins 1-9) (Removed to John W. Barriger III National Railroad Library).
B-68 1930-1939.
B-68 Interstate Commerce Commission, 1930-1939.
B-68 1940-1949.
B-68 Interstate Commerce Commission, 1940-1949.
B-68 1950-1959.
B-68 Interstate Commerce Commission, 1950-1959.
62 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-68 1960-1969.
B-68 1970-1979.
B-68 1980-1989.
B-68 1990-1999
B-68 Maintenance.
Subsubseries 126.3 Automatic Train Operation Pictures (black and white/color photographs and B-69 slides). B-69 1950-1959.
B-69 1960-1969.
B-69 1970-1979.
B-69 1980-1989.
Subsubseries 126.4 Automatic Train Stop Pictures (black and white/color photographs and B-69 slides). B-69 1880-1899.
B-69 1900-1909.
B-69 1910-1919.
B-69 Interstate Commerce Commission, 1910-1919.
B-69 1920-1929.
B-69 Interstate Commerce Commission, 1920-1929.
B-69 1930-1939.
B-69 Interstate Commerce Commission, 1930-1939.
B-69 1940-1949.
B-69 Interstate Commerce Commission, 1940-1949.
63 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-69 1950-1959.
B-69 Interstate Commerce Commission, 1950-1959.
B-69 Federal Railroad Administration, 1970-1979.
B-69 1980-1999.
Subsubseries 126.5 Cab Signals Pictures (black and white/color photographs and B-69 diagrams). B-69 1860-1899.
B-69 1900-1929.
B-69 Interstate Commerce Commission, 1920-1929.
B-69 1930-1939.
B-69 Interstate Commerce Commission, 1930-1939.
B-69 1940-1949.
B-69 Interstate Commerce Commission, 1940-1949.
B-69 1950-1959.
B-70 Patents, 1953.
B-70 Interstate Commerce Commission, 1950-1959.
B-70 1960-1969.
B-70 1970-1979.
B-70 1980-1981.
B-70 1982.
B-70 1983.
B-70 1984-1988.
B-70 1989.
64 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-70 1990-1999.
B-70 2000-2003.
Positive Train Control (also titled "Communications Based Train Control, Subsubseries 126.6 Electronic Train Management System, Positive Train Stop or Transmission Based Signaling").
B-70 1994.
B-70 1995.
B-71 May 9-10, 1995.
B-71 November 13, 1995.
B-71 November 14, 1995.
B-71 1996.
B-71 1997-1998.
B-71 1999.
B-71 2000-2006.
B-71 Alaska Railroad.
B-71 Amtrak Northeast Corridor, 1970-1979.
B-71 Amtrak Northeast Corridor, 1980-1989.
B-71 Amtrak Northeast Corridor, 1990-1999.
B-71 Amtrak Northeast Corridor, 2000-2004.
Amtrak Michigan (Also called "Amtrak Incremental B-71 Train Control in Michigan"), 1990-1999. Amtrak Michigan, (Also called "Amtrak Incremental B-71 Train Control in Michigan"), 2000-2004 Burlington Northern Advanced Railroad Electronics B-72 System (ARES), 1980-1989. Burlington Northern Advanced Railroad Electronics B-72 System, 1990-1999.
65 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Burlington Northern and Sante Fe, Electronic Train B-72 Management System, 2002-2003. Burlington Northern and Sante Fe, Electronic Train B-72 Management System, 2003-2004. Burlington Northern-Union Pacific Tests, June 1994- B-72 June 1995. Burlington Northern-Union Pacific Tests, System B-72 Requirements, June 1995. Burlington Northern-Union Pacific Tests, Federal B-72 Railroad Administration, July 1995. Burlington Northern-Union Pacific, Product B-72 Specification, August 1995. Burlington Northern-Union Pacific Tests, September, B-72 November 1995. Burlington Northern-Union Pacific Tests, January- B-72 March 1996. Burlington Northern-Union Pacific Tests, April- B-72 December 1996.
B-72 Burlington Northern-Union Pacific, 1997.
B-72 CSX Transportation - Communications Based
CSX Transportation - Communications Based, Train B-72 Management. Federal Railroad Administration, 5-7 May 1998, B-72 General "A" File. Federal Railroad Administration, 5-7 May 1998, B-72 Costs/Benefits "B" File. Federal Railroad Administration, 5-7 May 1998, B-72 Regulations "C" File. Federal Railroad Administration, 5-7 May 1998, B-72 Railroad Communications and Train Control, "D" File. Federal Railroad Administration, 5-7 May 1998, Safety B-72 "E" File. Federal Railroad Administration, 5-7 May 1998, Safety B-72 "F" File. Federal Railroad Administration, 5-7 May 1998, Human B-72 Factors "G" File. Federal Railroad Administration, 5-7 May 1998, Europe B-73 "H" File.
66 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents North American Joint Positive Train Control Program, B-73 1998-1999. North American Joint Positive Train Control Program, B-73 January 2000 "A" File. North American Joint Positive Train Control, January B-73 2000 "B" File. North American Joint Positive Train Control, March- B-73 December 2000. B-73 North American Joint Positive Train Control, 2001.
B-73 North American Joint Positive Train Control, 2002.
North American Joint Positive Train Control, 2003- B-73 2006. Transportation Research Board: Committee A2MO2 B-73 Electrification and Train Control for Guided Ground Transportation Systems.
SUBSERIES 127 TRAIN OPERATIONS
B-73 1840-1899.
B-73 1900-1919.
B-73 1920-1949.
B-73 1950-1959.
B-73 1960-1989.
B-73 1990-1993.
B-73 1994-1995.
B-73 1996-1999.
B-73 2000-2005. Let's Operate a Railroad by L. E. Roxbury, High Iron Publishers, Warwick, B-74 VA, 1957 (photocopy of book).
Subsubseries 127.1 Dispatching
B-74 1870-1979.
67 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-74 1980-1999.
B-74 2000-2003.
Subsubseries 127.2 Dispatching, Computer Aided
B-74 1950-1979.
B-74 1980-1985.
B-74 1986-1989.
B-74 1990-1994.
B-74 1995-1999.
B-74 2000-2004.
Subsubseries 127.3 Operating Rules
B-74 1880-1899.
B-74 1900-1929. Association of American Railroads: Standard Code of B-74 Operating Rules (January 1964, January 1986, January 1993). Association of American Railroads: Standard Code of B-74 Operating Rules (November 1938 "A" File). Association of American Railroads: Standard Code of B-74 Operating Rules (November 1938 "B" File). Association of American Railroads: Standard Code of B-74 Operating Rules, 1930-1949. Association of American Railroads: Standard Code of B-75 Operating Rules, 1960-1999. B-75 Amtrak, Chicago (April 1972, September 1993).
B-75 Chessie System, Conrail (January, September 1985).
Norac (East), Code of the West (October 1952, B-75 April/October 1985, January 1992, January 1998).
Subsubseries 127.4 By Signal Indications
B-75 1900-1919.
68 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-75 1920-1929.
B-75 1930-1959.
Subsubseries 127.5 Telegraph
B-75 1830-1899.
B-75 1900-1999.
Subsubseries 127.6 Telephone
B-75 1890-1999.
Subsubseries 127.7 Time
B-75 1850-2004.
Subsubseries 127.8 Timetables, Employee
B-75 1940-1949.
B-75 1960-1969.
B-75 1970-1979.
B-75 1980-1984.
B-75 1985-1989.
B-75 1990-1999.
Subsubseries 127.9 Timetables and Train Orders
B-75 1920-1999.
Subsubseries 127.10 Train Order System
B-75 Train Order Patent (information: 1907, 1908).
Subsubseries 127.11 Train Staff
B-75 1880-1899.
B-76 1900-1939.
69 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents
SUBSERIES 128 TRANSFORMERS
B-76 Pictures (black and white illustrations).
B-76 1910-1999.
SUBSERIES 129 UNION PACIFIC
B-76 1900-2004.
B-76 Chicago and Alton.
B-76 Chicago and North Western.
B-76 Chicago Great Western.
B-76 Chicago, Rock Island and Pacific.
B-76 Denver and Rio Grade Western.
B-76 Missouri-Kansas-Texas.
B-76 Missouri Pacific.
B-76 Southern Pacific.
B-76 Texas and Pacific.
B-76 Western Pacific.
SUBSERIES 130 UNION SWITCH AND SIGNAL COMPANY
B-76 1880-1889.
1880-1899 (Removed from folder: "A Catalogue of the Devices and their Parts. Manufactured by the B-76 Union Switch and Signal Company, 1894 -cataloged in John W. Barriger III National Railroad Library as rare book TF640.U64C28 1894).
B-76 1900-1909.
B-76 1910-1919.
70 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-76 1920-1929.
B-76 George Westinghouse, 1921.
B-76 1930-1939.
B-76 1940-1949.
B-76 Patents, 1944-1949.
B-77 History, 1882, Volume IA.
B-77 History, 1891, Volume IB.
B-77 History, 1926, Volume IC.
B-77 History, Volume II Appendix (related domestic companies, 1882-1948).
B-77 Patents, 1950-1954.
B-77 1950-1959 (general Union Switch and Signal).
B-77 History of Union Switch and Signal, May 1950.
B-77 1960-1969 (general).
B-77 1970-1979 (general).
B-77 1980-1989 (general).
Book: The Search for Safety: A history of Railroad Signals and the People who made them. Commissioned by Union Switch and Signal Division. B-77 American Standard, Inc. (removed to John W. Barriger III National Railroad Library - catalogued as book TF615.B74 1981).
B-77 1990-1999 (general).
B-77 1991 Price List.
B-77 1995 Price List.
B-77 2000-2004 (general).
Subsubseries 130.1 Companies
B-77 Hall Signal Company, 1870-1899.
71 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-77 Hall Signal Company, 1900-1935.
B-77 Johnson Railroad Signal Company, 1880-1929.
Johnson Railroad Signal Company: Catalogue of B-78 Interlocking and Railroad Signaling Appliances, 1889.
B-78 National Switch and Signal Company, 1890-1899.
B-78 Transcontrol, 1950-1989.
SUBSERIES 131 UNITED STATES RAILROAD ADMINISTRATION
B-78 1910-1929.
SUBSERIES 132 WATERBURY BATTERY COMPANY
B-78 1920-1929.
SUBSERIES 133 WESTERN-CULLEN-HAYES
B-78 Chicago Railway Signal and Supply Company, 1890-1989.
B-78 Chicago Railway Signal and Supply Company, 1914.
SUBSERIES 134 WIRE AND CABLE
B-78 1880-1929.
B-78 1930-1959.
B-78 1960-1989.
B-78 1990-1999.
B-78 2000-2002.
B-78 Testing.
SUBSERIES 135 YARDS
72 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-78 Pictures (black and white/color photographs and slides).
B-78 1880-1899.
B-78 1900-1919.
B-78 1920-1929.
B-78 1930-1939.
B-78 1940-1946.
B-78 1947-1949.
B-79 1950-1951.
B-79 1952.
B-79 1953.
B-79 1954.
B-79 1955.
B-79 1956.
B-79 1957.
B-79 1958.
B-79 1959.
B-79 1959, St. Louis Southwestern Yards.
B-79 1960-1961.
B-79 1962-1964.
B-79 1965-1966.
B-79 1967-1969.
Penn Central (Elkhart, IN): General Railway Signal Company Class-Matic B-79 Mark II Maintenance, Alfred E. Perlman Yard (Selkirk, NY), June 1968.
B-79 1970-1971.
73 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents Penn Central, Buckeye Yard (Columbus, OH): General Railway Signal B-79 Company Class-Matic Mark II Maintenance, November 1971.
B-80 1972-1974.
B-80 1975-1978.
B-80 1979. Canadian Pacific Rail: St. Luc Yard (Montreal, Quebec), 1979 (General B-80 Railway Signal Company Operating Instructions for Hump Conductor). Conrail DeWitt (Syracuse, NY), August 1980 - "A" File (General Railway B-80 Signal Company). Conrail DeWitt (Syracuse, NY), August 1980 - "B" File (General Railway B-80 Signal Company).
B-80 1980-1981. Chesapeake and Ohio, Queensgate (Cincinnati, Ohio), September, 1982 B-80 (Union Switch and Signal).
B-80 1982-1989. South Pacific Englewood Yard (Houston, TX), Union Switch and Signal, B-80 January 1984, October 1985.
B-80 1990-1999.
B-80 2000-2004.
B-80 Maintenance, 1950-1989.
Subsubseries 135.1 Retarders Pictures (black and white/color photographs and B-81 slides). B-81 1920-1929.
B-81 1930-1939.
B-81 1940-1949.
B-81 1950-1959, "A" File.
B-81 1950-1959, "B" File.
B-81 1960-1969.
74 Robert W. McKnight Railway Signal Collection
SERIES 1 GENERAL HISTORICAL FILES
Box Folder Title and Description of Contents B-81 1970-1979.
B-81 1980-1985.
B-81 VR-IV Controls, Union Switch and Signal, June 1982.
B-81 1986-1989.
B-81 1990-1999.
B-81 2000-2002.
B-81 Maintenance.
B-81 Skate Retarders.
B-81 Signal Hardware.
Subseries 136-Book Manuscript
B-82 Illustrations
B-83 Research Materials
B-84 Research Materials
B-85 Research Materials
B-86 Research Materials
B-87 Research Materials
B-88 Research Materials
B-89 Research Materials
B-90 Research Materials
B-91 Research Materials
B-92 Research Materials
B-93 Research Materials
B-94 Personal
75