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.
Sombers business development agreement
Sombers Group Inc.; Sombers Associates Inc.
Document, 1989
102672673
Mohawk Data Sciences Corp. (MDS)
Mohawk Data Sciences Corporation (MDS)
Document, 1972
102734245
Interact
Sombers Associates Inc.
Document, 1980-1981
102680146
Proceedings of the Third Australian Computer Conference
Australian Trade Publications
Document, 1966
102734234
Computer Machinery Corporation (CMC)
Computer Machinery Corporation
Document, 1970-1972
102734246
Inforex Inc.
Inforex, Inc.
Document, ca. 1972
102672845
Interdata Inc.
Interdata, Inc.
Document, 1968-1975
102734241
Prime Computer Inc.
Prime Computer, Inc. (PR1ME)
Document, 1978-1979
102734253
Dual Mode Transit System (DMTS)
Rohr Industries Inc.; Monocab Inc.; Urban Mass Transportation Administration
Document, 1973-1974
102734235
Entrex Inc.
Entrex Inc.
Document, 1971-1974
102734247
General Computer Systems Inc.
General Computer Systems Inc.
Document, 1972-1973
102734254
Four-Phase Systems Inc.
Four-Phase Systems, Inc.
Document, 1972-1973
102672846
A guide for software documentation
Advanced Computer Techniques Corporation (ACT)
Document, 1969
102734192
Scientific Data Systems Inc. (SDS)
Scientific Data Systems, Inc.
Document, 1966-1968
102734243
Lockheed Electronics Company Inc.
Lockheed Electronics Company, Inc.
Document, 1971-1973
102734244
Varian Data Machines
Varian Data Machines
Document, 1968-1972; bulk 1968
102734252
Computing equipment conferences
Document, 1953-1954
102734233
Auerbach data communications and handling reports
Auerbach Info, Inc.
Document, 1969-1970
102734238
Debevoise & Plimpton communication system
T-Logic Inc.
Document, 1983
102672838
Amtrak Centralized Electrification and Traffic Control (CETC) system
Amtrak
Document, 1982-1990
102734239