Due to the implementation of a new Collection Management System, CHM staff will not be able to assist researchers and in-person visits until March 2025.
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.
Search the Catalog
Catalog contains over 151,033 records.
Slide rule
C-Thru Ruler Company
Physical object
102647461
Slide Rule
Sun Hemmi
Physical object
102647459
Slide rule
Dietzgen
Physical object
102631483
Slide rule
KLPZ
Physical object
102666598
Slide rule
Frederick Post Company
Physical object
102666726
Slide rule
Pickett Industries
Physical object, Circa 1962
102666651
Slide rule
Richardson Rule Works
Physical object
102666694
Slide rule
UGK
Physical object
102631584
Slide rule
Nestler
Physical object
102631907
Slide rule
Faber-Castell
Physical object
102631899
Slide rule
Blundell Rules Ltd.
Physical object
102666745
Slide rule
Frederick Post Company
Physical object, Circa 1967
102631553
Slide rule
Keuffel & Esser Co.
Physical object
102631825
Slide rule
Keuffel & Esser Company
Physical object
102631779
Slide rule
Pickett & Eckel, Inc.
Physical object
102672920
Slide rule
Hope Slide Rule Mfg. Co., Ltd.
Physical object
102666548
Slide rule
Blundell Harling
Physical object
102666550
Slide rule
British Thornton
Physical object
102666555
Slide rule
Blundell Rules Ltd.
Physical object
102666562
Slide rule
Keuffel & Esser Company
Physical object
102631630