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.
Search the Catalog
Catalog contains over 150,481 records.
Photoelectric Number Sieve Machine ("Gear Machine")
D. H. Lehmer / Robert Canepa
Physical object, 1932
X85.82
Base and motor for the photoelectric number sieve machine
D. H. Lehmer / Robert Canepa
Physical object
102692839