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.
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Digital Equipment Computer Users Society (DECUS)
Document, 1963-02-25
102645677
Transpose matrix
Digital Equipment Computer Users Society (DECUS)
Document, 1962-09-06
102650044
Compare blocks
Digital Equipment Computer Users Society (DECUS)
Document, 1963-03-12
102650020
Extended DECAL
Digital Equipment Corporation (DEC)
Document, 1963-09-26
102650099
Extend DDT
Bolt, Beranek and Newman, Inc. (BBN)
Document, 1964-03-02
102650102
MAINDEC 3 Address Test Program
Digital Equipment Corporation (DEC)
Document, 1963
102650493
ALWAC Conversion Routine
Adams Associates
Document, 1961-04-13
102650373
PAP Symbol Table
Digital Equipment Corporation (DEC)
Document, 1962-08
102650323
MAINDEC 14 Typewriter Test Program
Digital Equipment Corporation (DEC)
Document, 1963
102650498
Program Flags
Digital Equipment Corporation (DEC)
Document, 1962-01-05
102650121
Certainly
Digital Equipment Corporation (DEC)
Document, 1972-01-31
102650575
Expensive typewriter (1969)
Digital Equipment Corporation (DEC)
Document, 1969-09-25
102636253
FCDDDT
Digital Equipment Corporation (DEC)
Document, 1965-09-22
102652331
Midas Assembler Extended Memory
Digital Equipment Corporation (DEC)
Document, 1963-11-10
102652336
New Float
Digital Equipment Corporation (DEC)
Document
102635697
Scope character output subroutine
Digital Equipment Corporation (DEC)
Document
102635712
TS Macro
Digital Equipment Corporation (DEC)
Document, 1963-08-20
102635717
Translation checkerboard
Digital Equipment Corporation (DEC)
Document
102636258
Decimal print subroutine
Digital Equipment Corporation (DEC)
Document
102636241
TDCM Connections - Memory Bay schematics
Digital Equipment Corporation (DEC)
Document
102652444