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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 143,273 records.

Result 1-2 of about 2

Description of a relay calculator
Harvard University Press
Document, 1949
102676771

Description of a magnetic drum calculator
Harvard University Press
Document, 1952
102676772