Iowa Heritage Digital Collections
State Library of Iowa

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

Mule-driven threshing machine, 1931
Caterpillar Fifteen, 1930
Four-row corn planter, 1931
Four-row corn planter, 1931
Four-row corn planter, 1931
McCormick-Deering hay rake, 1925
Horse-drawn cultivator, 1930
Dynamometer, 1934
Four-row corn planter, 1931
Tractor-mounted six-row culitvator, 1926
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