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.
Acu-Math slide rule
Acu-Rule Co.
Physical object, Circa 1965
102666729
Slide rule
Ramenskoye Fahbreekah
Physical object, Circa 1958
102666591
Slide rule
LSLO
Physical object, Circa 1972
102631614
Slide rule
Keuffel & Esser Company
Physical object
102666717
Slide rule
Pickett & Eckel, Inc.
Physical object, Circa 1958
102666678
Slide rule
Pickett & Eckel, Inc.
Physical object, Circa 1945
102666680
Slide rule
Dietzgen
Physical object
102666572
Slide rule
Boots Ringplan
Physical object
102631878
Slide rule
Pickett & Eckel, Inc.
Physical object, Circa 1959
102631563
Circular slide rule
Scientific Instruments Co.
Physical object
102666712
Slide rule
Boots Ringplan
Physical object
102666750
Slide rule
Faber-Castell
Physical object
102631823
Sun slide rule
Hemmi Bamboo Slide Rule Company Ltd.
Physical object
102666743
Slide rule
Dietzgen
Physical object, Circa 1959
102666565
Slide rule
Keuffel & Esser Company
Physical object
102631450
Slide rule
Thornton, A.G., Ltd.
Physical object
102666546
Slide rule
Jakar
Physical object
102666560
Slide rule
Lawrence Engineering Instruments
Physical object, Circa 1946
102631443
Slide rule
Keuffel & Esser Company
Physical object
102631448
Slide rule
Dennison Manufacturing Co.
Physical object
102631431