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.
Slide rule
W&G Record Processing Company
Physical object
102666744
Slide rule
Dietzgen
Physical object
102666636
Slide rule
Lawrence Engineering Instruments
Physical object
102631658
Slide rule
Lawrence Engineering Instruments
Physical object, Circa 1946
102631660
Slide rule
Sterling
Physical object, Circa 1968
102631672
Slide rule
Relay Industrial Co.
Physical object
102666477
PIC slide rule
Thornton, A.G., Ltd.
Physical object
102631684
Slide rule
Dietzgen
Physical object
102666655
Acu-Math slide rule
Acu-Rule Co.
Physical object, Circa 1960
102631711
Acu-Math slide rule
Acu-Rule Co.
Physical object, Circa 1955
102631716
Slide rule
Charvos-Roos Corp.
Physical object
102631704
Slide rule cover
Fuji
Physical object
102731395
Slide rule
Compass
Physical object, Circa 1960
102666504
Slide rule
Frederick Post Company
Physical object
102631859
Slide rule
George W. Richardson
Physical object
102666666
Slide rule
Keuffel & Esser Company
Physical object, Circa 1900-1909
102631758
Sun slide rule
Hemmi Bamboo Slide Rule Company Ltd.
Physical object
102631518
Metric-converter slide rule
Sterling
Physical object
102631436
Slide rule
Faber-Castell
Physical object
102631498
Slide rule
Keuffel & Esser Company
Physical object
102631765