From magnetic tape and rare film to lab notebooks and business plans to early mainframes and source code, our collection is as diverse as the history of computing. It is a rich resource for everyone, comprising historical objects, documents, software titles, ephemera, and photographs and moving images.
Note: CHM's online catalog has been updated through January 23rd, 2025. A new and improved catalog will be launched in Summer 2025.
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Catalog contains over 151,130 records.
Tom Watson, Jr.
Still image, 1983-06-09
102698449
Queen Mary IBM group Photograph
Still image, 1953-12
102698451
John McPherson in an exhibit
Still image, 1983-06-08
102698456
IBM SSEC Printing Mechanism
Still image
102698437
Proceedings of an international symposium on the theory of switching, Part I
Harvard University Press
Document, 1959
102709676
core memory lucite display
Physical object
102745651
Prototyping Disk
Unknown
Physical object
102718331
Personal correspondence
Document, 1966-1991
102734212
Planning, progress, and market development reports
International Business Machines Corporation (IBM)
Document, 1967-1974
102734217
Electronic accumulators
Document, ca. 1947
102676635
Proceedings of the Institution of Electrical Engineers
Institution of Electrical Engineers (IEE)
Document, 1955-07
102684000
Proceedings of the Institution of Electrical Engineers
Institution of Electrical Engineers (IEE)
Document, 1954-05
102683999
Review of input and output equipment used in computing systems
American Institute of Electrical Engineers (AIEE)
Document, 1953-03
102683994
IBM SSEC Memory Tape punching unit
Still image, Circa 1948
102698443
John McPherson on Queen Mary
Still image, 1953-12
102698450
John McPherson in front of refreshment tent
Still image
102698455
The transistor : selected reference material on characteristics and applications
Western Electric Co., Inc.; Bell Telephone Laboratories, Inc.
Document, 1951
102711714
Proceedings and materials from APL as a Tool of Thought seminars
International Business Machines Corporation (IBM); APL PI, Inc.; Bristol-Meyers Company; STSC, Inc.
Document, 1983-1987
102734223
Proceedings of the Institution of Electrical Engineers
Institution of Electrical Engineers (IEE)
Document, 1956-11
102684002
FORTRAN experience at the New York data processing center
Document, 1957-07
102653975