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  • All fields: United States -- Iowa -- Ames
(238 results)



Display: 20

    • Paul C. Taff

    • Iowa State College; Iowa State University; Extension
    • Paul C. Taff, acting director of extension summer of 1914.
    • Extension reports and comments, 1909

    • Extension; Iowa State College; Iowa State University; Short course;
    • A report from 1909 regarding the budget, details extension activities, discusses costs and salaries. Also contains several recommendations for expansion of extension activities and promotion.
    • Pearl's Sweetest Sel, Clydesdale filly, 1915

    • Iowa State University; Dept. of Animal Science; Horses; Clydesdale horse; Draft horses; Pearl's Sweetest Sel (Draft horse);
    • The bay yearling Clydesdale draft horse filly "Pearl's Sweetest Sel" (American Clydesdale stud book registration number 18953; sired by Grey Pearl, out of Her Sweetest) posed with braided mane and tail in front of the Iowa State College...
    • Dale Klingsmith and Belgian draft horse, 1930

    • Iowa State University; Dept. of Animal Science; Horses; Klingsmith, Dale; Horse grooms; Belgian draft horse; Draft horses;
    • Dale Klingsmith with a Belgian draft horse mare, having won first prize in the horsefitter competition at the Herdsmen Show in 1930. The job of the horsefitter or exhibitor is to prepare a horse for competition and to present a horse at its very...
    • Atanasoff-Berry Computer drawing, 1941

    • Atanasoff, John V. (John Vincent); Computers -- United States -- History; Electronic digital computers -- History; Iowa State University; Berry, Clifford Edward, 1918-1963; ABC Computer; Computer engineering -- Iowa -- Ames; Atanasoff-Berry...
    • A drawing of the Atanasoff-Berry Computer showing the drum covers removed. The ABC Computer was built in Physics Hall (Physics Building) at Iowa State University.
    • A side view of the Atanasoff-Berry Computer, 1942

    • Atanasoff, John V. (John Vincent); Computers -- United States -- History; Electronic digital computers -- History; Iowa State University; Berry, Clifford Edward, 1918-1963; ABC Computer; Computer engineering -- Iowa -- Ames; Atanasoff-Berry...
    • A side view of the Atanasoff-Berry Computer. The computer contained 280 vacuum tubes and 31 thyratrons.
    • Atanasoff-Berry Computer drawing, 1985

    • Atanasoff, John V. (John Vincent); Computers -- United States -- History; Electronic digital computers -- History; Berry, Clifford Edward, 1918-1963; Iowa State University; Computer engineering -- Iowa -- Ames; ABC Computer; Atanasoff-Berry...
    • A drawing of the Atanasoff-Berry Computer with parts identified, 1985
    • Drums of the Atanasoff-Berry computer, Physics

    • Atanasoff, John V. (John Vincent); Computers -- United States -- History; Electronic digital computers -- History; Berry, Clifford Edward, 1918-1963; Iowa State University; ABC Computer; Computer engineering -- Iowa -- Ames; Atanasoff-Berry...
    • The keyboard and counter drums contained 1600 capacitors each. The capacitors stored charge, acting as a primitive memory unit.
    • Part of an Atanasoff-Berry Computer

    • Atanasoff, John V. (John Vincent); Computers -- United States -- History; Electronic digital computers -- History; Berry, Clifford Edward, 1918-1963; Iowa State University; ABC Computer; Computer engineering -- Iowa -- Ames; Atanasoff-Berry...
    • The Atanasoff-Berry Computer was completed in 1942 in the basement of Physics Hall at Iowa State University. It was about the size of a desk and weighed more than 700 lbs.
    • The last remaining part of the Atanasoff-Berry Computer

    • Atanasoff, John V. (John Vincent); Computers -- United States -- History; Electronic digital computers -- History; Berry, Clifford Edward, 1918-1963; Iowa State University; ABC Computer; Computer engineering -- Iowa -- Ames; Atanasoff-Berry...
    • This drum is all that remains of the Atanasoff-Berry Computer at Iowa State University. The drum is shown with a ruler for purpose of scale.
    • John Vincent Atanasoff

    • Atanasoff, John V. (John Vincent); Computers -- United States -- History; Electronic digital computers -- History; Iowa State University; ABC Computer; Computer engineering -- Iowa -- Ames; Atanasoff-Berry Computer;
    • The young John Vincent Atanasoff standing in front of the blackboard
    • Atanasoff-Berry Computer during construction phase

    • Atanasoff, John V. (John Vincent); Computers -- United States -- History; Electronic digital computers -- History; Berry, Clifford Edward, 1918-1963; Iowa State University; ABC Computer; Computer engineering -- Iowa -- Ames; Atanasoff-Berry...
    • The Atanasoff-Berry Computer taken from John Vincent Atanasoff files during the construction phase. The 280 vacuum tubes served as logic gates.
    • Atanasoff-Berry Computer frame, circuit installed

    • Atanasoff, John V. (John Vincent); Computers -- United States -- History; Electronic digital computers -- History; Berry, Clifford Edward, 1918-1963; Iowa State University; ABC Computer; Computer engineering -- Iowa -- Ames; Atanasoff-Berry...
    • The frame for the Atanasoff-Berry Computer with the circuit installed
    • John Vincent Atanasoff

    • Atanasoff, John V. (John Vincent); Computers -- United States -- History; Electronic digital computers -- History; Iowa State University; ABC Computer; Computer engineering -- Iowa -- Ames; Atanasoff-Berry Computer;
    • John Vincent Atanasoff sitting at his desk at Iowa State University

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