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.
Slide rule
Physical object, ca. 1970
102785375
Y2K problem - correspondence with Capers Jones
Document, 1998
102785449
Presentation slides
Document, 1970-1978
102785615
Y2K problem - articles on public reaction
Document, 1999
102785443
Y2K problem - BMR Software logos
Document, ca. 1997
102785448
Universal Time Engine - specifications (excerpt)
Document, 2001
102785442
Universal Time Engine - project summary
Document, 2001
102785440
Reports - Rand Corporation
Document, 1953-1954
102785426
IBM 650 - Flair system
Document, 1955
102785386
Association for Computing Machinery (ACM 70)
Document, 1970
102785362
Y2K problem - articles on projection and potential impact of Y2K problem
Document, 1998
102785444
IBM 650 programming - lab book
Document, 1952-1955
102785388
Code and text processing - International Organizatino for Standardization
Document, 1967-1972
102785369
Universal Time Engine - proposal
Document, 2001
102785441
Universal Time Engine - project planning/technical specifications/programs
Document, 2000
102785439
Y2K problem - website directory printouts
Document, 1997
102785458
Scrapbooks
Document, 1955-1982
102785427
Biographical papers
Document, 1943-1973; 1990-1992
102785363
Universal Time Engine/program language
Document, 2000-2001
102785438
Y2K problem - website articles and links
Document, ca. 1997-2000
102785457