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 151,130 records.
Slide rule
Graphoplex
Physical object
102666453
Slide rule
Omega
Physical object
102666511
Slide rule
Diwa
Physical object
102666530
Slide rule
Hoffman
Physical object
102666457
Slide rule
Nestler
Physical object
102666731
Slide rule
Nestler
Physical object
102666736
Slide rule
Logarex
Physical object
102666445
Slide rule
Dietzgen
Physical object
102631441
Slide rule
Nestler
Physical object
102631559
Slide rule
Unique
Physical object
102666498
Slide rule
SIDA
Physical object
102631617
Slide rule
Physical object
102666734
Slide rule
Diwa
Physical object
102666450
Slide rule
Diwa
Physical object
102666444
Slide rule
Simplon
Physical object
102631581
Slide rule
Graphoplex
Physical object
102666526
Slide rule
Simplon
Physical object
102666499
Slide rule
Kent
Physical object
102666463
Slide rule
Unique
Physical object
102631849
Slide rule
Graphoplex
Physical object
102666447