abandoned and the military armament upgrades in 1872-73, ad- announced its secession from the Union and only months before and -vancements in weaponry made defensive stairway occupying curtain and tower bastion magazines provided it in 1876. Fort Jefferson obsolete, the only viable powder storage. Despite the outbreak of Civil War. Thus, through out however, the first guns had arrived. This occurred shortly after that not a single gun could be found. By January of the following year, Engineer, Montgomery C. Meigs arrived in November 1860 he reported the for Union naval forces and a military prison, the main fort The magazines Totten, War, when Fort Jefferson served as a coastal blockade As 0 METERS 0 FEET

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in HABS NO. FL-44-G HABS NO. FL-44-A COMMANDING QUARTERS QUARTERS OFFICER'S OFFICERS' HABS NO. FL-44 FRONT FOUR MAGAZINE, SMALL DETACHED HABS NO. FL-44-D CURTAIN MAGAZINE BASTION FOUR HABS NO. FL-44 MAGAZINE

4'-0"

4'-0" LOCATION MAP

8'-3 1/2" FORT JEFFERSON NO SCALE HABS NO. FL-44-E 38'-5 1/2" HOT SHOT 12'-4" FURNACE LARGE DETACHED HABS NO. FL-44-C HABS NO. FL-44-B HABS NO. FL-44-F HARBOR LIGHT MAGAZINE TORTUGAS BARRACKS SOLDIERS' 9'-10"

DRAWN BY: DANIEL DE SOUSA

SURVEY NO. LIBRARY OF CONGRESS FORT JEFFERSON DOCUMENTATION PROJECT, 2016 HISTORIC AMERICAN INDEX NUMBER FORT JEFFERSON, BASTION 4 MAGAZINE BUILDINGS SURVEY FL-44 UNITED STATES DEPARTMENT OF THE INTERIOR NATIONAL WEST MONROE COUNTY FLORIDA SHEET 1 OF 3 SHEETS

IF REPRODUCED, PLEASE CREDIT THE HISTORIC AMERICAN BUILDINGS SURVEY, NATIONAL PARK SERVICE, NAME OF DELINEATOR, DATE OF DRAWING 0 FEET 1 2 3 4 5 10 1/4"=1'-0" 15 37'-10 1/2" 1/4"=1'-0" SECOND FLOOR PLAN DN MAGAZINE 15'-4 3/4" × 13'-3" A A UP 1:48

38'-7" 0 METERS 1 2 3 4 1:48 5

4'-0"

4'-1"

8'-3"

38'-6" 12'-3 1/2"

9'-10 1/2"

DRAWN BY: DANIEL DE SOUSA

SURVEY NO. LIBRARY OF CONGRESS FORT JEFFERSON DOCUMENTATION PROJECT, 2016 HISTORIC AMERICAN INDEX NUMBER NATIONAL PARK SERVICE FORT JEFFERSON, BASTION 4 MAGAZINE BUILDINGS SURVEY FL-44 UNITED STATES DEPARTMENT OF THE INTERIOR DRY TORTUGAS NATIONAL PARK MONROE COUNTY FLORIDA SHEET 2 OF 3 SHEETS

IF REPRODUCED, PLEASE CREDIT THE HISTORIC AMERICAN BUILDINGS SURVEY, NATIONAL PARK SERVICE, NAME OF DELINEATOR, DATE OF DRAWING 12'-6" 10'-0 1/8" 8'-10 3/8" SECOND FLOOR FIRST FLOOR TERREPLEIN LANDING LANDING 0 METERS 0 FEET 1 2 1 1/4"=1'-0" SECTION A-A 3 4 5 2 3 10 1:48 1/4"=1'-0" 4 1:48 15 5

10'-10" 1'-5 1/2" 13'-5 3/4" 2'-1" 3'-3" UNDERSIDE OF UNDERSIDE OF UNDERSIDE OF OUTER ARCH INNER ARCH TERREPLEIN UPPER TIER GRADE ARCH BRICK JOISTS TOP OF VAULT OF BRICK UNDERSIDE SECOND FLOOR WOOD VAULT UNDERSIDE OF

11'-11 7/8" 1'-5 5/8" 10'-6 3/4" SOUTH ELEVATION 1/4"=1'-0" 1:48 GRADE UPPER TIER TERREPLEIN

12'-5 1/4" 18'-8"

31'-1 1/4"

DRAWN BY: DANIEL DE SOUSA

SURVEY NO. LIBRARY OF CONGRESS FORT JEFFERSON DOCUMENTATION PROJECT, 2016 HISTORIC AMERICAN INDEX NUMBER NATIONAL PARK SERVICE FORT JEFFERSON, BASTION 4 MAGAZINE BUILDINGS SURVEY FL-44 UNITED STATES DEPARTMENT OF THE INTERIOR DRY TORTUGAS NATIONAL PARK KEY WEST MONROE COUNTY FLORIDA SHEET 3 OF 3 SHEETS

IF REPRODUCED, PLEASE CREDIT THE HISTORIC AMERICAN BUILDINGS SURVEY, NATIONAL PARK SERVICE, NAME OF DELINEATOR, DATE OF DRAWING