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
Keuffel & Esser Company
Physical object, Circa 1947
102631766
Slide rule
KLPZ
Physical object, Circa 1976
102666592
Slide rule
Weber, F., & Co.
Physical object
102666600
Slide rule
KLPZ
Physical object, Circa 1971
102666605
Slide rule
Keuffel & Esser Company
Physical object
102631533
Slide rule
Keuffel & Esser Company
Physical object
102631538
Aristo slide rule
Dennert & Pape
Physical object
102631540
Slide rule
Pickett & Eckel, Inc.
Physical object, Circa 1954
102666573
Slide rule
Hope Slide Rule Mfg. Co., Ltd.
Physical object
102631502
Slide rule
Guedon
Physical object
102631444
Slide rule
Logarex
Physical object
102631449
Slide rule
Blundell Harling
Physical object
102631855
Slide rule
Frederick Post Company
Physical object, Circa 1968
102631867
Slide rule
Pickett Industries
Physical object, Circa 1970
102631564
Slide rule
Faber-Castell
Physical object
102631824
Slide rule
Nestler
Physical object
102631829
Aristo slide rule
Aristo
Physical object
102631800
Aristo slide rule
Dennert & Pape
Physical object
102631812
Slide rule
Keuffel & Esser Company
Physical object
102631778
Slide rule
Keuffel & Esser Company
Physical object
102631780