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.
Programmed Data Processor-1 Manual
Digital Equipment Corporation (DEC)
Document, 1960-1961
102652401
Correspondence with vendors: Teletype
Digital Equipment Corporation (DEC)
Document, 1963-1964
102652420
Drum Test (1972)
Digital Equipment Corporation (DEC)
Document, 1972
102652449
Special pulse timing chart
Digital Equipment Corporation (DEC)
Document, 1961-06-21
102634776
Teletype Trouble Code
Digital Equipment Corporation (DEC)
Document
102652418
Ultra-Precision CRT Type 31A Display
Digital Equipment Corporation (DEC)
Document, 1963
102650501
DRUM ZEROER ENGLISH
Software
102652704
Single precision integer square root
Software
102665086
LISP
Massachusetts Institute of Technology (MIT)
Document, 1966-05-20
102664689
Binary *2400 2100? double precision DECOUT
Software
102652711
CROCK = MTA4
Massachusetts Institute of Technology (MIT)
Document
102665113
Administrative and executive routines
Massachusetts Institute of Technology (MIT)
Document, 1967
102664280
Test Programs
Massachusetts Institute of Technology (MIT)
Document
102665055
FORTRAN PASS 1
Massachusetts Institute of Technology (MIT)
Document, 1975-02-23
102664487
FORTRAN PASS 3/4/5
Massachusetts Institute of Technology (MIT)
Document
102665163
AMPEX CHECKERBOARD
Massachusetts Institute of Technology (MIT)
Document
102665168
BASIC SOURCE #3
Massachusetts Institute of Technology (MIT)
Document, 1973-10-14
102665170
Round File
Massachusetts Institute of Technology (MIT)
Document, 1971-06-12
102665062
Relocatable Assembler
Massachusetts Institute of Technology (MIT)
Document
102664691
FLIT I
Digital Equipment Corporation (DEC)
Document, 1961-07-31
102635748