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.
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Catalog contains over 150,495 records.
Lehmer sieve parts
D. H. Lehmer
Physical object
102630320
Amplifier for Lehmer gear sieve
D. H. Lehmer (written on top is "manufactured by R.C. Burt")
Physical object
X112.82A
Lehmer Bicycle Chain Number Sieve
DH Lehmer / Robert Canepa
Physical object, 1981
102647620
Lehmer paper sieve stencils in wooden box
Lehmer, D.N.
Physical object
102630319
Electronic photocell
Zeiss Ikon AG Werk Kiel
Physical object
X2290.2002
Delay Line Number Sieve Machine
D. H. Lehmer
Physical object, 1966
X86.82
Photoelectric Number Sieve Machine ("Gear Machine")
D. H. Lehmer / Robert Canepa
Physical object, 1932
X85.82
Number Sieve Machine using 16 mm film
D. H. Lehmer
Physical object, 1936
X87.82
Base and motor for the photoelectric number sieve machine
D. H. Lehmer / Robert Canepa
Physical object
102692839