PublisherInternational Business Machines Corporation (IBM)
Place of PublicationSan Jose, CA
Dimensionsoverall: 8 in x 10 in
DescriptionB&W image of Walnut Keypunch. Shows keypunch mounted in a large box with only the keypunching mechanish showing. There are photocards
in the two hopper feeds and cards in the punch
Verso: Red stamp: "Date 3/17/60 Negative No 2453; Title Walnut File (Mock-up) ; Project or Department No 939
Authorized by Larry Janofsky IBM Research Department No 508 "