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.
LA5-160 electrical calculator
Monroe Calculating Machine Company
Physical object, ca. 1940
XB40.79
Valentine portable typewriter
Olivetti
Physical object, 1969
102628789
High speed adding calculator
Monroe Calculating Machine Company
Physical object, undated
XB10.76
Precise Adding Machine
Precision Adding Machine Co. Inc.
Physical object, 1946
XB188.81
HP-35 "Electronic-Slide-Rule" Calculator
Hewlett-Packard Company (HP)
Physical object, 1972
XB34.79
SQUEE: The Robot Squirrel
Berkeley, Edmund
Physical object, ca. 1940
B1630.01
Lord's Calculator
R. Waddington, Coventry
Physical object, ca. 1900
XB123.80
Morris's Measuring Instrument
Morris, John
Physical object, undated
XB128.80
Arithmometer - Thomas de Colmar
Chevalier Charles Xavier Thomas / M. Thomas de Colmar
Physical object, ca. 1850
B214.82
Otis King cylindrical slide rule
King, Otis
Physical object, undated
B351.86
Soroban
Physical object, ca. 1960
B1659.01
Fuller's Spiral Slide Rule
Stanley, W. F.
Physical object, ca. 1900
102633216
Curta calculator
Contina Ltd.
Physical object, 1954
B326.84
Millionaire's Mechanical Calculator floor stand
Hans W. Egli Co
Physical object, ca. 1910
XB91.76A
Napier's Bones
Physical object, ca. 1700
B27.79
Thomas Arithmometer
Chevalier Charles Xavier Thomas / M. Thomas de Colmar
Physical object, 1850
XB3.76
Circular slide rule
Pickett
Physical object, ca. 1955
B1657.01
J. Amsler-Laffon's Mechanical Integrator
Amsler
Physical object, ca. 1883
B1506.01
Sector
Elliott Brothers Ltd
Physical object, ca. 1854
B358.86
Compurobot programmable toy robot
Physical object, undated
B1508.01B