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
Deeva
Physical object, Circa 1970
102666441
Slide rule
British Thornton
Physical object
102666561
Slide rule
Kutsuwa
Physical object
102631552
Slide rule
Frederick Post Company
Physical object, Circa 1964
102631886
Slide rule
Faber-Castell
Physical object
102631831
Slide rule
Norton Gregory Ltd
Physical object
102631881
Aristo slide rule
Dennert & Pape
Physical object
102631805
Slide rule
British Thornton
Physical object
102666547
Slide rule
Sterling
Physical object
102666597
Slide rule
Keuffel & Esser Company
Physical object
102631792
Acu-Rule slide rule
Festus Mfg. Co.
Physical object, Circa 1938
102631723
Slide rule
Sterling
Physical object, Circa 1968
102631665
Beginner's slide rule
Keuffel & Esser Company
Physical object
102631735
Slide rule
Faber-Castell
Physical object
102631487
Slide rule
Unique
Physical object
102666554
Slide rule
Hoffman
Physical object
102631514
Acu-Math slide rule
Acu-Rule Co.
Physical object, Circa 1955
102631519
Circular slide rule
A. Lietz Co
Physical object
102631432
Slide rule
Charvos-Roos Corp.
Physical object, Circa 1946
102631437
Slide rule with addiator
Faber-Castell
Physical object
102631526