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.
MAD-1 CPU
Mad Computer
Physical object, ca. 1984
X1620.99A
MAD-1 dual floppy disk drive
Mad Computer
Physical object, ca. 1984
X1620.99B
MAD-1 disk drive cable
Mad Computer
Physical object, ca. 1984
X1620.99E
MAD-1 monitor
Mad Computer
Physical object, ca. 1984
X1620.99D
MAD-1 video cable
Mad Computer
Physical object, ca. 1984
X1620.99F
MAD-1 keyboard
Mad Computer
Physical object, ca. 1984
X1620.99C
MAD-1 CPU to dual floppy disk drive interconnect cable
Mad Computer
Physical object, ca. 1984
X1620.99H
MAD-1 disk drive cable
Mad Computer
Physical object, ca. 1984
X1620.99G
Hammers for H-122 printers
Honeywell Inc.
Physical object
102674544
Course Notes on Intro to Programming, Honeywell H-800, H-800 price list
Harvard University
Document, 1959
102649939
Pulse Gen 4410 H 1410 H System Building Block
Digital Equipment Corporation (DEC)
Physical object, Circa 1965
102629587
Pulse Gen 4410 H 1410 H System Building Block
Digital Equipment Corporation (DEC)
Physical object, Circa 1965
102629575
Pulse Gen 4410 H 1410 H System Building Block
Digital Equipment Corporation (DEC)
Physical object, Circa 1965
102629585
Pulse Gen 4410 H 1410 H System Building Block
Digital Equipment Corporation (DEC)
Physical object, Circa 1965
102629578
Module repair, H. H. Scott
Digital Equipment Corporation (DEC)
Still image, 1973
102763287
Pulse Gen 4410 H 1410 H System Building Block
Digital Equipment Corporation (DEC)
Physical object, Circa 1965
102629586
Pulse Gen 4410 H 1410 H System Building Block
Digital Equipment Corporation (DEC)
Physical object, Circa 1965
102629581
Pulse Gen 4410 H 1410 H System Building Block
Digital Equipment Corporation (DEC)
Physical object, Circa 1965
102629574
H-kg
Software
102699951
4410 H 1410 H Pulse Gen System Building Block
Digital Equipment Corporation (DEC)
Physical object, Circa 1965
102688351