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aerial photography slide rule

aerial photography slide rule

Pickett & Eckel, Inc.
circa 1951
comparative display of relays for Harvard Mark I-IV computers

comparative display of relays for Harvard Mark I-IV computers

Harvard Computation Laboratory
1944-1952
comparative display of standard counters and later IBM ASCC-Mark I counters

comparative display of standard counters and later IBM ASCC-Mark I counters

International Business Machines Corporation
1929-1938
Image Not Available

crate lid for shipping Super-Schmidt meniscus lens to Whipple / Goddard

James G. Baker
1949-1951
harmonic analyzer

harmonic analyzer

Zdenek Trnka
1947
Harvard Mark II final models of relays

Harvard Mark II final models of relays

Harvard Computation Laboratory
1947
Harvard Mark IV memory register, word "111"

Harvard Mark IV memory register, word "111"

Harvard Computation Laboratory
1949-1950
IBM ASCC-Harvard Mark I photo album

IBM ASCC-Harvard Mark I photo album

International Business Machines Corporation
1944
IBM ASCC-Mark I cams, counters, and relays

IBM ASCC-Mark I cams, counters, and relays

International Business Machines Corporation
1939-1944
IBM ASCC-Mark I card weight, paper guide, two multiprong relays

IBM ASCC-Mark I card weight, paper guide, two multiprong relays

International Business Machines Corporation
circa 1944
IBM ASCC-Mark I chain link

IBM ASCC-Mark I chain link

International Business Machines Corporation
circa 1944
IBM ASCC-Mark I computer framed photograph

IBM ASCC-Mark I computer framed photograph

Harvard Computation Laboratory
1945-1955
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The Collection of Historical Scientific Instruments
Science Center, Room 371 • 1 Oxford Street
Cambridge, MA 02138 •chsi@fas.harvard.edu
p. 617-495-2779 • f. 617-496-5794
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