Due to the implementation of a new Collection Management System, CHM staff will not be able to assist researchers and in-person visits until March 2025.
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.
Search the Catalog
Catalog contains over 151,130 records.
SMS card
International Business Machines (IBM)
Physical object, Circa 1959
102730229
SMS card DD ZX
International Business Machines (IBM)
Physical object, Circa 1959
102730154
SMS card
International Business Machines (IBM)
Physical object, Circa 1959
102730159
SMS card
International Business Machines (IBM)
Physical object, Circa 1959
102730161
Vacuum tube type 5Y3GT
Sylvania
Physical object, Circa 1950
102716818
SMS card
International Business Machines (IBM)
Physical object, Circa 1959
102629838
SMS card
International Business Machines Corporation (IBM)
Physical object, Circa 1959
102730077
IBM 655 Power unit
International Business Machines (IBM)
Physical object, 1954
102728116
Reproduction rotary switch knobs
Physical Object
102751989
Three position push button switch holders
Physical Object
102751991
SMS card DB ZZ
International Business Machines (IBM)
Physical object, Circa 1959
102730287
SMS card APM
International Business Machines (IBM)
Physical object, Circa 1959
102730294
SMS card AD YY
International Business Machines (IBM)
Physical object, Circa 1959
102730299
Marginal check power supply for IBM 709
Ohmite
Physical object
102728977
IBM 722 Punch
International Business Machines (IBM)
Physical object, Circa 1954
102729204
Terminator
Physical object
102729920
IBM 7094 Trim
International Business Machines (IBM)
Physical object, Circa 1964
102729982
SMS card RL
International Business Machines (IBM)
Physical object, Circa 1959
102716826
SMS card DK
International Business Machines (IBM)
Physical object, Circa 1959
102716838
SMS card
International Business Machines Corporation (IBM)
Physical object, Circa 1959
102730078