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  • All fields: of Iowa
(3246 results)



Display: 20

    • Draft tests of wagons, 1906

    • Agricultural and Biosystems Engineering Department; Agricultural Engineering; Iowa State University;
    • Draft Tests of Wagons. (A) Davenport 4" tire wagon used in draft test. (B) Electric Metal wheel 5" tire wagon used in draft test. Agricultural Engineering Department. March 9, 1906.
    • Tractive efficiency tests, 1934

    • Agricultural and Biosystems Engineering Department; Agricultural Engineering; Iowa State University;
    • Tractive Efficiency Tests. Effect of wheel diameter and length of lug upon tractive efficiency. By McKibben. Ames, IA. 1934.
    • Dynamometer

    • Agricultural and Biosystems Engineering Department; Agricultural Engineering; Iowa State University; Dynamometer; Technical drawing
    • Technical drawing of a dynamometer.
    • Two gas engines, 1907

    • Agricultural and Biosystems Engineering Department; Agricultural Engineering; Iowa State University; Internal Combustion Engines
    • Two gas engines, one manufactured by Deyo the other by Lennox. Deyo engine pictured as tested. Engines were tested as part of the Hamilton and Reading thesis. Agricultural Engineering Department. Photograph by Gardener. May 11, 1907.
    • Group of tractors, 1920

    • Agricultural and Biosystems Engineering Department; Agricultural Engineering; Iowa State University; Tractors;
    • Group of Tractors. Agricultural Engineering Department, Ordered by Professor Davidson, 4-5-20.
    • Dynamometer, side view

    • Agricultural Engineering; Agricultural and Biosystems Engineering Department; Dynamometer; Iowa State University;
    • Side view of dynamometer, ordered by J. B. Davidson, head of the Agricultural Engineering Department.
    • J.B. Davidson photographs and other materials, trip to China, 1947-1949

    • Agricultural Engineering; Farm mechanization; Agricultural machinery; Iowa State University; Dept. of Agricultural Engineering; International Harvester Company; Irrigation; Travels; Davidson, J. Brownlee (Jay Brownlee), 1880-1957; VEISHEA;...
    • A collection of Jay Brownlee Davidson's photographs taken during an International Harvester sponsored trip to China from 1947-1949 to introduce agricultural engineering to the Chinese. A pamphlet, "Committee on Agricultural Engineering for China",...
    • Group of students and machinery

    • Agricultural machinery; Agricultural education; Agricultural and Biosystems Engineering Department; Agricultural Engineering; Students;
    • Group of students & machinery. Agricultural Engineering Department. Ordered by Prof. Collins. 6-8-26.
    • Agricultural chemistry laboratory, 1897

    • Agriculture; Chemistry; Laboratory; Iowa State University;
    • Nine men in the agricultural chemistry laboratory. The caption on the reverse reads:""Man on extreme right is T.W. Mast '97; next to him is Harry Scurr '98."" The lower right corner of the photograph is missing.
    • George M. Allee record book

    • Agriculture; Family farms; Rural farming; Extension
    • A journal with references to short courses and Perry G. Holden, notes keeping mind of information learned while attending short courses, newspaper clippings documenting personal successes from crop yields, and ribbons from corn shows. Evidence of...
    • Letter from Carver to Pammel, April 10, 1928

    • Amaryllis; Lilium Harrisii; Pammel, L. H. (Louis Hermann), 1862-1931
    • April 10, 1928 Dr. L. H. Pammel Iowa State College Botany Department Station A Ames, Iowa My dear Dr. Pammel: I am delighted to get your good letter which has just reached me. Your visit here was indeed a great inspiration, and as I stated before,...

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