Undergraduate Designs Radical Abacus to Rival Harvard Electronic Calculator Yale Daily News, Friday, January 10, 1947 (p. 1, 5). A.G. Puddlefoot, Yale '50, with circular abacus challenges Mark I or II. Photo: Puddlefoot with abacus.
name: label: Collection Creator
content: Hopper, Grace Murray, 1906-1992
setName: label: See more items in
content: Grace Murray Hopper Collection
label: See more items in
content: Grace Murray Hopper Collection / Series 9: Humor File
container: label: Container
content: Box 5, Folder 27
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials