Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (61552 total)

Cracked gumbotil and contact with loess above, Iowa, July 25, 1924
Crumbling granite boulders, English Township, Iowa, June 30, 1924
Iowan till over Kansan gumbotil, soil on top of the gumbotil, Wayne Township, Iowa, July 8, 1924
Erosion in till and loess, Cass Township, Iowa, July 18, 1924
Dean G.F. Kay's car, after wind storm
Granite boulder, 24x21x10 feet, Union Township, Iowa, June 20, 1924
Iowan Drift area topography, Spring Rock Township, Iowa, June 18, 1925
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