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.
Telegraph key and receiver
J. H. Bunnell & Company
Physical object, undated
B61.80
Fowler's "Jubilee Magnum," slide rule
Fowler and Company, Manchester
Physical object, 1948
B337.85
Thomlinson's Equivalent Paper Slide Scale
J. Thomlinson, Ltd.
Physical object, 1940
XB107.80
Sector
Heath, T.
Physical object, ca. 1740
B338.85
Sector
Elias Allen
Physical object, ca. 1600
B176.81
Time is Money arithometer
The Oskar Muller Co.
Physical object, ca. 1880
B243.82
Leadbetter slide rule
Dring and Fage Makers, Ltd.
Physical object, ca. 1800
XB108.80
Class 6 High Keyboard Bookkeeping Machine
Burroughs Adding Machine Company
Physical object, 1930
B156.80
Boucher's Calculator
Manloves, London
Physical object, Circa 1876
B218.82
Pantograph drawing instrument
W. & A. Smith
Physical object, undated
B153.81
Calculimetre
Charpentier, G.
Physical object, ca. 1913
XB312.84
Section of first Trans-Atlantic telegraph cable
Atlantic Telegraph Company
Physical object, undated
102630322
Simon 1 relay logic machine
Wiliam A. Porter
Physical object, 1950
B1514.01
Soroban (transitional)
Soroban
Physical object, ca. 1900
B26.79
Sector
Jacobus Lusverg
Physical object, 1687
B1507.01
Boucher's Calculator -circular slide rule
Stanley Maker, London
Physical object, ca. 1880
B234.82
Folding gauging rule
Physical object, ca. 1930
B208.82
Vacuum tube module
University of California, Berkeley
Physical object, undated
B186.81
Map distance measuring device
TACRO Inc
Physical object, undated
XB129.80
Guide rail for Amsler integrator
Amsler
Physical object, ca. 1880
102630325