Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (1817 total) for Iowa State University Library Photograph Collection

Testing electrical equipment, 1934
Band saw, 1934
Horse dynamometer trial run
Diesel tractor, 1938
Mold board plow
Steel roof experiment, 1938
Examining a horse hitch model, 1940
Plained furrows, 1942
Student with measuring rod, 1942
Two men measuring a plowed furrow, 1942
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