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.
Sun slide rule
Hemmi Bamboo Slide Rule Company Ltd.
Physical object
102631843
Beginner's slide rule
Keuffel & Esser Company
Physical object
102631785
Slide rule
Nestler
Physical object
102631557
Slide rule
Lutz
Physical object
102666434
Slide rule
Ding Feng
Physical object, Circa 1958
102666439
Slide rule
Faber-Castell
Physical object
102631901
Slide rule
Compass
Physical object, Circa 1960
102631576
Slide rule
Scientific Instruments Co.
Physical object
102666465
Slide rule
Faber-Castell
Physical object
102631893
Slide rule
Nestler
Physical object
102631583
Slide rule
Shanghai Si Da
Physical object, Circa 1940
102666489
Slide rule
Boots Ringplan
Physical object
102631879
Slide rule
Richardson Rule Works
Physical object, Circa 1911
102666679
Slide rule
Pickett & Eckel, Inc.
Physical object, Circa 1959
102666686
Slide rule
Richardson Rule Works
Physical object
102666693
Slide rule
Fujikeiko Co.
Physical object
102666491
PIC slide rule
British Thornton
Physical object
102666496
Slide rule
Dietzgen
Physical object
102666698
Slide rule
Wolters-Noordhoff
Physical object
102666701
Slide rule
Keuffel & Esser Company
Physical object, Circa 1956
102631754