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.
Programming materials
Document, 1970-1983
102734226
Correspondence and memos
Document, 1952-1991; bulk 1970-1971
102734219
Completed stacked 02I F.E.T. module
Physical object
102681947
Core Memories
Unknown
Physical object
102718334
Core Memories
Unknown
Physical object
102718339
Transistor
Texas Instruments Incorporated (TI)
Physical object
102718341
Core Memories
Unknown
Physical object
102718336
TI Logic module
Texas Instruments Incorporated (TI)
Physical object
102718348
Core Memories
Unknown
Physical object
102718335
APL manuscript
Document, ca. 1970s
102734230
Vacuum tube type 6F71
Unknown
Physical object
102718325
Core Memories
Unknown
Physical object
102718337
John McPherson in group
Still image
102698453
SLT module
IBM
Physical object, Circa 1965
102745653
Notes and memorabilia
Document, 1971-1993
102734207
Automatic data processing manuscript
Document, 1959
102734194
Conference talks and programs
Document, 1946; 1961; 1969-1971; 1991
102734214
IBM Harvard Mark 1 manual
International Business Machines Corporation (IBM)
Document, 1953
102734187
Core Memories
Unknown
Physical object
102718333
Transformer Read only Storage (TROS) Module
International Business Machines Corporation (IBM)
Physical object, Circa 1964
102673850