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Guide to the Paul Joseph Cohen Papers SC1264

Daniel Hartwig & Jenny Johnson Department of Special Collections and University Archives May 2015 Green Library 557 Escondido Mall Stanford 94305-6064 [email protected] URL: http://library.stanford.edu/spc

Guide to the Paul Joseph Cohen SC126419373 1 Papers SC1264 Language of Material: English Contributing Institution: Department of Special Collections and University Archives Title: Paul Joseph Cohen papers Creator: Cohen, Paul J. Creator: Cohen, Paul J. Identifier/Call Number: SC1264 Identifier/Call Number: 19373 Physical Description: 4 Linear Feet6 boxes Date (inclusive): 1981-2015 Access to Collection The materials are open for research use. Audio-visual materials are not available in original format, and must be reformatted to a digital use copy. Publication Rights All requests to reproduce, publish, quote from, or otherwise use collection materials must be submitted in writing to the Head of Special Collections and University Archives, Stanford University Libraries, Stanford, California 94305-6064. Consent is given on behalf of Special Collections as the owner of the physical items and is not intended to include or imply permission from the copyright owner. Such permission must be obtained from the copyright owner, heir(s) or assigns. See: http://library.stanford.edu/spc/using-collections/permission-publish. Restrictions also apply to digital representations of the original materials. Use of digital files is restricted to research and educational purposes. Preferred Citation [identification of item], Paul Joseph Cohen Papers (SC1264). Dept. of Special Collections and University Archives, Stanford University Libraries, Stanford, Calif. Biographical / Historical Paul Joseph Cohen won two of the most prestigious awards in mathematics—in completely different fields. He won the American Mathematical Society's Bôcher Prize in 1964 for analysis and the Fields Medal, considered the "Nobel Prize" of mathematics, in 1966 for logic. "Paul Cohen was one of the most brilliant mathematicians of the 20th century," said Princeton Math Professor Peter Sarnak, who received his doctorate from Stanford in 1980 under Cohen's direction. "Like many great mathematicians, his mathematical interests and contributions were very broad, ranging from mathematical analysis and differential equations to mathematical logic and number theory. This breadth was highlighted in a conference held at Stanford last September celebrating Cohen's work and his 72nd birthday. The gathering consisted of leading experts in different fields who normally would not find themselves listening to the same set of lectures." Stanford Mathematics Chair Yasha Eliashberg, the Herald L. and Caroline L. Ritch Professor in the School of Humanities and Sciences, was among many mathematicians who recalled Cohen's passion for tackling extremely difficult, longstanding mathematical problems—and solving them. "His solution of the Continuum Hypothesis will be remembered as one of the crown achievements of mathematics in the last 50 years, along with Andrew Wiles's proof of Fermat's Last Theorem and the recent proof of the Poincaré conjecture by Grigori Perelman," Eliashberg said. "He is best known for his solution of the first of the 23 problems that the German mathematician David Hilbert posed in his very influential address to the International Mathematical Union in 1900," Sarnak said. "By the 1950s, after the work of Gödel, this problem, known as the 'Continuum Hypothesis,' had become the central one in the set theory." In the late 1870s, German mathematician Georg Cantor put forth a hypothesis that said any infinite subset of the set of all real numbers can be put into one-to-one correspondence either with the set of integers or with the set of all real numbers. All attempts to prove or disprove this conjecture failed until 1938, when Kurt Gödel showed it was impossible to disprove the continuum hypothesis. Despite having never worked in set theory, Cohen proved the extremely surprising result that both the Continuum Hypothesis and the Axiom of Choice—two of the most basic ideas in mathematics—were actually undecidable using the axioms of set theory. This result, which meant that conventional mathematics could neither prove nor disprove concrete and well known mathematical assertions, caused healthy turbulence among philosophers, logicians and mathematicians concerned with the concept of truth. "Kurt Gödel, whose work in the 1930s on the consistency of the continuum hypothesis was completed by Cohen's proof of its independence from the usual axioms of set theory, lauded Cohen's work as 'no doubt...the greatest advance in the

Guide to the Paul Joseph Cohen SC126419373 2 Papers SC1264 foundations of set theory since its axiomatization,'" wrote Solomon Feferman, an emeritus professor of mathematics and philosophy famed for work in logic, in an e-mail interview. Alexander S. Kechris, a descriptive set theorist at Caltech, said Cohen invented and used in his independence proofs a fundamental mathematical technique called forcing. "It has since become a major tool in modern mathematical logic," Kechris said. Feferman, the Patrick Suppes Family Professor of Humanities and Sciences, Emeritus, explained that forcing is used to construct unusual models of the axioms of set theory, whereby statements are made true in stages and forced to remain so in all further stages. Angus MacIntyre, a professor of applied logic at Queen Mary, University of London, said Cohen "had done work that should long outlast our times. For mathematical logic, and the broader culture that surrounds it, his name belongs with that of Gödel. Nothing more dramatic than their work has happened in the history of the subject." Life path Cohen was born April 2, 1934, in Long Branch, N.J., to parents Abraham and Minnie, both Jewish immigrants from Poland. According to a 1968 article from the Trenton Evening Times, Cohen, the youngest of four children, was only nine years old when his sister Sylvia checked out a book about calculus from a New York library for him. Librarians were reluctant to let her have the book, much less for her younger brother, arguing that even some college professors didn't understand calculus. Cohen grew up in Brooklyn and graduated from Stuyvesant High School in New York City in 1950. He attended Brooklyn College from 1950 to 1953 but left before receiving a bachelor's degree when he learned he could pursue graduate studies in Chicago with just two years of college under his belt. From the University of Chicago's Mathematics Department, he received a master's degree in 1954 and a doctorate in 1958. He wrote his thesis, "Topics in the Theory of Uniqueness of Trigonometric Series," under the supervision of Antoni Zygmund. Before the award of his doctorate, Cohen taught math at the University of Rochester from 1957 to 1958. He also taught at the Massachusetts Institute of Technology during the 1958-59 academic year. From 1959 to 1961, he was a fellow at Princeton's Institute for Advanced Study. Cohen joined Stanford's faculty in 1961 as an assistant professor of mathematics, becoming an associate professor in 1962, the year he received an Alfred P. Sloan research fellowship. In 1963, he won a Research Corp. Award for "his proof of the independence of the continuum hypothesis and of the axiom of choice, and initiating a whole series of advances in the field." He became a full professor in 1964. "He inspired me when I was a young mathematician," said MacIntyre, a graduate student at Stanford from 1964 to 1967. "I never heard him lecture on set theory, but rather on algebraic geometry and p-adic fields. He had a very special style, full of enthusiasm and very 'hands on.' He used as little general theory as possible and always conveyed a sense that he got to the heart of things. His techniques, even in something as abstract as set theory, were very constructive. He was dauntingly clever, and one would have had to be naïve or exceptionally altruistic to put one's 'hardest problem' to the Paul I knew in the '60s." Sarnak agreed: "Cohen was a dynamic and enthusiastic lecturer and teacher. He made mathematics look simple and unified. He was always eager to share his many ideas and insights in diverse fields. His passion for mathematics never waned." At a White House ceremony on Feb. 13, 1968, President Johnson presented him with the 1967 National Medal of Science for "epoch-making results in mathematical logic which have enlivened and broadened investigations in the foundation of mathematics." Calling Cohen "one of the most brilliant of mathematical logicians," Johnson said: "His work has greatly influenced the foundation and development of mathematics." In 1972, Cohen became the first holder of the Marjorie Mhoon Fair Professorship in Quantitative Science. Author of the book Set Theory and the Continuum Hypothesis, he was a member of the National Academy of Sciences, the American Academy of Arts and Sciences, the American Mathematical Society and the American Philosophical Society. He retired in 2004 but continued to teach until this quarter. "In recent years, Cohen continued to work on notoriously difficult problems and in particular the Riemann Hypothesis, which is problem eight on Hilbert's list," Sarnak said. "As of today this problem remains unsolved." Cohen played piano and violin and sang in a Stanford chorus and in a Swedish folk group, according to his son Charles. He spoke Swedish, French, Spanish, German and Yiddish and traveled widely, taking sabbaticals in England, Sweden, France and Hawaii. He met his wife, Christina, from the Swedish town of Malung, during a cruise from Stockholm to Leningrad in the summer of 1962. They married on Oct. 10, 1963. Cohen is survived by wife Christina Cohen of Stanford; sister Tobel Cosiol of San Jose, Costa Rica; brother Ruby Cassel of Brooklyn, N.Y.; twin sons Eric and Steven Cohen of Los Angeles, Calif., and son Charles Cohen and his wife, Andreea, of Boston, Mass.

Guide to the Paul Joseph Cohen SC126419373 3 Papers SC1264 Source: http://news.stanford.edu/news/2007/april4/cohen-040407.html Scope and Contents Collection consists of Cohen's photographs, audiovisual materials, and computer files. Subjects and Indexing Terms Mathematics. Mathematics. Mathematics -- Scientific applications. Mathematics -- Scientific applications. Mathematics -- Study and teaching (Higher). Mathematics -- Study and teaching (Higher). Mathematics -- History -- 20th century. Mathematics -- History -- 20th century. Cohen, Paul J. Cohen, Paul J. Cohen, Paul J.

Photographs

box 2, folder 1 Travel, Family 1981 box 2, folder 2 Travel box 2, folder 3 unlabeled Audiovisual material

box 3, folder 1 There Once Was A Town 2000 Physical Description: 1 videotape(s) (vhs)

box 3, folder 2 Kreisel Vienna 2006 May 1 Physical Description: 1 videotape(s) (vhs)

box 3, folder 3 Paul's TV Physical Description: 1 videotape(s) (vhs)

box 3, folder 4 Taft house and Vista House Physical Description: 1 videotape(s) (vhs)

box 3, folder 5 Burbank Houses Los Feliz Wiletta Physical Description: 1 videotape(s) (vhs)

box 3, folder 6 Alcyona House Physical Description: 1 videotape(s) (vhs)

box 3, folder 7 Mikado 1987 Physical Description: 1 videotape(s) (vhs)

box 3, folder 8 Japanese TV Physical Description: 1 videotape(s) (vhs)

box 3, folder 9 Mom's tape Maltese Falcon Physical Description: 1 videotape(s) (vhs)

Guide to the Paul Joseph Cohen SC126419373 4 Papers SC1264 Audiovisual material

box 4, folder 1 Mom's Tape West Side Story Physical Description: 1 videotape(s) (vhs)

box 4, folder 2 Paul's Tape Mrs. Chase at R. R. Stats Japanese TV Physical Description: 1 videotape(s) (vhs)

box 4, folder 3 Japanese TV, Japanese News Physical Description: 1 videotape(s) (vhs)

box 4, folder 4 Bertil, Ewa etc. Warriors Japanese TV Physical Description: 1 videotape(s) (vhs)

box 4, folder 5 Paul's tape, House Inventory Japanese TV Physical Description: 1 videotape(s) (vhs)

box 4, folder 6 Kreisel interview Vienna Physical Description: 1 videotape(s) (vhs)

box 4, folder 7 Book tape I important Physical Description: 1 videotape(s) (vhs)

box 4, folder 8 Marten Davis some Paul Physical Description: 1 videotape(s) (vhs)

box 4, folder 9 unlabeled Physical Description: 1 videotape(s) (vhs)

box 4, folder 10 unlabeled Physical Description: 1 videotape(s) (vhs)

box 4, folder 11 Yansan To = Japanese video Physical Description: 1 videotape(s) (vhs)

box 5, folder 1 Posmer's, Charles playing Tennis with Paul, Stein, P.A. Train Dept., Stein Parlon Campus 1982 Physical Description: 1 videotape(s) (vhs)

box 5, folder 2 Paul's tape Physical Description: 1 videotape(s) (vhs)

box 5, folder 3 Paul's tape Family Friends 1987 May 28 Physical Description: 1 videotape(s) (vhs)

box 5, folder 4 Paul's tape Physical Description: 1 videotape(s) (vhs)

box 5, folder 5 Eric Mad About You Physical Description: 1 videotape(s) (vhs)

box 5, folder 6 Japanese … Physical Description: 1 videotape(s) (vhs)

box 6 Japanese Lessons 6_02 2015 Physical Description: audiocassette(s)

Guide to the Paul Joseph Cohen SC126419373 5 Papers SC1264 Audiovisual material

box 6 Side A Music Japanese 6_03 2015 Physical Description: audiocassette(s)

box 6 Lesson 30, Songs 6_04 Physical Description: audiocassette(s)

box 6 Untitled 6_05 Physical Description: audiocassette(s)

box 6 Untitled 6_06 Physical Description: audiocassette(s)

box 6 Lessons 15 16 17; Roger Reynolds 6_07 Physical Description: audiocassette(s)

box 6 Untitled 6_08 Physical Description: audiocassette(s)

box 6 Sweden 6_09 2002 Summer Physical Description: 1 videotape(s) (video8)

box 6 New Booth 6_10 Physical Description: 1 videotape(s) (video8)

box 6 LA Hours 6_11 Physical Description: 1 videotape(s) (video8)

box 6 Costa Rica 6_12 2001 jul Physical Description: 1 videotape(s) (video8)

box 6 Important 6_13 Physical Description: 1 videotape(s) (video8)

box 6 PJ Cohen 2 6_14 2001 Nov 07 Physical Description: 1 videotape(s) (minidv)

box 6 Cohen Talk At Vienna; Godel Conference 6_15 2006 Physical Description: 1 videotape(s) (minidv)

box 6 Paul Cohen House 6_16 Physical Description: 1 videotape(s) (minidv)

box 6 Paul Cohen (Living Room piano) 6_17 2001 Oct Physical Description: 1 videotape(s) (minidv)

box 6 Vienna Kreisel 6_18 2006 Jan 05 Physical Description: 1 videotape(s) (minidv)

box 6 Vienna Kreisel Outside Taxi Ride Cohendon Internet 6_19 2006 Physical Description: 1 videotape(s) (minidv)

box 6 Vienna Joan student 6_20 2006 Physical Description: 1 videotape(s) (minidv)

Guide to the Paul Joseph Cohen SC126419373 6 Papers SC1264 Audiovisual material

box 6 Dagfian 6_21 Physical Description: 1 videotape(s) (minidv)

box 6 Godel vs Skolem Axium of Choice 6_22 Physical Description: 1 videotape(s) (minidv)

box 6 Martin Davis 6_23 2001 Oct 14 Physical Description: 1 videotape(s) (minidv)

box 6 Martin Davis 2 6_24 2001 Oct 14 Physical Description: 1 videotape(s) (minidv)

box 6 4K Operation 6_25 2004 Dec 12 Physical Description: 1 videotape(s) (minidv)

box 6 Paul Cohen Short 6_26 2006 Physical Description: 1 videotape(s) (minidv)

box 6 Paul Cohen upstairs 6_27 2001 Dec 10 Physical Description: 1 videotape(s) (minidv)

box 6 Paul Cohen Rieman Hypo Living Room 6_28 Physical Description: 1 videotape(s) (minidv)

box 6 Paul Cohen 6_29 2001 Oct Physical Description: 1 videotape(s) (minidv)

box 6 Cohen Selberg 6_30 2001 Oct 16 Physical Description: 1 videotape(s) (minidv)

box 6 Paul Cohen piano 6_31 2001 Oct Physical Description: 1 videotape(s) (minidv)

box 6 Godel Conference Panel Tape # 2 Kreisel McIntyre 6_32 Physical Description: 1 videotape(s) (minidv)

box 6 Vienna Hilary Putnam Accordion Player 6_33 2006 Physical Description: 1 videotape(s) (minidv)

box 6 Vienna Swiss TV Gala Dinner 6_34 2006 Physical Description: 1 videotape(s) (minidv)

box 6 Godel Conference BRND Intro CAFE Tape # 1 6_35 42852 Physical Description: 1 videotape(s) (minidv)

box 6 Vienna hotel Room, Hotel Lobby Penrose Speech 6_36 2006 Physical Description: 1 videotape(s) (minidv)

box 6 Moschovakis Inside # 2 6_37 2004 Sep 04 Physical Description: 1 videotape(s) (minidv)

box 6 Choir at hospital Dag Finn Interview Part 2 6_38 Physical Description: 1 videotape(s) (minidv)

Guide to the Paul Joseph Cohen SC126419373 7 Papers SC1264 Audiovisual material

box 6 Rudy Rucker 6_39 2001 Nov Physical Description: 1 videotape(s) (minidv)

box 6 Richard Block 6_40 Physical Description: 1 videotape(s) (minidv)

box 6 Cohen Speech Vienna Crowd Reaction 6_41 2006 Physical Description: 1 videotape(s) (minidv)

box 6 Vienna Café Top Press Conference hotel room 6_42 2006 Physical Description: 1 videotape(s) (minidv)

box 6 PJ Cohen 1 6_43 2001 Jul 01 Physical Description: 1 videotape(s) (minidv)

box 6 Cohen 6_44 2001 Oct 16 Physical Description: 1 videotape(s) (minidv)

box 6 Moschovakis Inside # 1 Outside Randy 6_45 2004 Sep 4 Physical Description: 1 videotape(s) (minidv)

box 6 Dad 70 Restaurant; Party 6_46 2004 Physical Description: 1 videotape(s) (minidv)

box 6 Moschovakis Outside; Eric's Camera 6_47 2004 Sep 4 Physical Description: 1 videotape(s) (minidv)

box 6 Paul Cohen 31 oz Magic Moyel Childhood; Religion 6_48 Physical Description: 1 videotape(s) (minidv)

box 6 Paul Cohen Home Choice Restaurant 6_49 Physical Description: 1 videotape(s) (minidv)

box 6 Civil War 6_59 Physical Description: 1 videotape(s) (vhs)

box 6 Larry Sanders - The Beginning of the End; As My Career Lay Dying; The Interview; Flip; The Final Episode 6_60 Physical Description: 1 videotape(s) (vhs)

box 6 VHS Yiddish Language - Motel The Operator 6_61 Physical Description: 1 videotape(s) (vhs)

box 6 Item Burres Frank Llryz Wright 6_62 Physical Description: 1 videotape(s) (vhs)

box 6 Various discs on spindle 6_63 Physical Description: optical disc(s)

New York Times Crossword Puzzles 6_01 Physical Description: 1 floppy disk(s) (3.5 inch)

Guide to the Paul Joseph Cohen SC126419373 8 Papers SC1264 Audiovisual material

Paul J. Cohen 6_50 Physical Description: 1 optical disc(s) (cd-r)

P. Cohen Data Disk 6_51 Physical Description: 1 optical disc(s) (cd-r)

Cohen Photos> Complete 6_52 Physical Description: 1 optical disc(s) (cd-r)

Cohen 72 Photos Disk 1 6_53 Physical Description: 1 optical disc(s) (cd-r)

Cohen 72 All Photos 6_54 Physical Description: 1 optical disc(s) (cd-r)

Untitled 6_55 Physical Description: 1 optical disc(s) (cd-r)

Sweiz 4 Photos; Sweden 0 Photos; note: many photos but unable to render 6_56 Physical Description: 1 optical disc(s) (cd-r)

Fields Medallists Lectures 6_57 Physical Description: 1 optical disc(s) (cd-r)

Paul and Christina 6_58 Physical Description: 1 optical disc(s) (cd-r)

Computer files

box 6 New York Times Crossword Puzzles 6_01 Physical Description: floppy disk(s) (3.5 inch)

box 6 Paul J. Cohen Medical Images 6_50 Physical Description: optical disc(s) (cd)

box 6 P Cohen Data Disk 6_51 2007 Mar 27 Physical Description: optical disc(s) (cd)

box 6 Cohan Photo's Complete 6_52 2006 Sep 16 Physical Description: optical disc(s) (cd)

box 6 Cohen 72 Photos Disk 1 6_53 Physical Description: optical disc(s) (cd)

box 6 Cohen 72 All Photos 6_54 Physical Description: optical disc(s) (cd)

box 6 Untitled 6_55 Physical Description: optical disc(s) (cd)

box 6 Sweiz; Sweden 6_56 Physical Description: optical disc(s) (cd)

Guide to the Paul Joseph Cohen SC126419373 9 Papers SC1264 Computer files

box 6 Fields Medallists' Lectures 6_57 Physical Description: optical disc(s) (cd)

box 6 Besuch Paul Christina 6_58 2003 Aug Physical Description: optical disc(s) (cd)

box 1 Logic, Book Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Book Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Rosenberg Programs Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Language Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 QAPLUS Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Auto Biography Literary Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Documentary Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 ACE EXE from FOXPRO 2.5 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Photos Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 PROGL Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 ICU Utility Power Plus 1995 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 FoxPro Backup Disk Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Book 2000 Sep 01 Physical Description: 1 floppy disk(s) (3.5 inch)

Guide to the Paul Joseph Cohen SC126419373 10 Papers SC1264 Computer files

box 1 Foxpro Backup Disk 3 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Murphy Wed. Photos Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Backup FoxPro Disk 1 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 FoxPro Backup Disk 2 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Baclup 3 (System) Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 FoxPro Backup Disk 4 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 ICU Utility Power Plus (2 of 2) 1995 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Book 1998 Nov Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Book 1995 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 MOUSE PROCOMM Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 pcohen.tex charles Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Disk 1 2001 Aug 23 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Windows Disk 4 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Math Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 DOS 3.20 1991 Feb Physical Description: 1 floppy disk(s) (3.5 inch)

Guide to the Paul Joseph Cohen SC126419373 11 Papers SC1264 Computer files

box 1 Backup 8 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Paul 6 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Seer's Sojour Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Backup Vol. 9 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 JAC.Doc Interview w/ Tommy Jaquete Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Vol 6 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Organizer-3 PC-Outline Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Backup IV Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Backup V Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Backup 9 Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 LIB Disk I QLIB.DOC QLIB.INI Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Willy the Worm, Willy Editor, Wizard, Qubert, Topgun Pinball Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Backup VIII Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Backup IX Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 PCTEX Disk #4 Physical Description: 1 floppy disk(s) (3.5 inch)

Guide to the Paul Joseph Cohen SC126419373 12 Papers SC1264 Computer files

box 1 Backup X Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Backup II Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Backup IV Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Backup VIII Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Untitled Physical Description: 1 floppy disk(s) (3.5 inch)

box 1 Untitled Physical Description: 1 floppy disk(s) (3.5 inch)

Guide to the Paul Joseph Cohen SC126419373 13 Papers SC1264