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Collection: Calvin Geological Photographs
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Men and boys surrounding “Jumbo” artesian well, Belle Plaine, Iowa, late 1890s or early 1900s
Artesian well/Jumbo well, 3 ft in diameter at surface, 195 deep through fine sand and blue clay. Bored with 2 inch drill. Water broke out. pressure 35 lbs to sq in.
Initial steps in the formation of gulches in loess, Graham Township, Iowa, late 1890s or early 1900s
Located in section 20 of Graham Township.
Kames, Thornton, Iowa, late 1890s or early 1900s
Located northwest of Thornton.
Terrace of Wisconsin age near Lansing, Iowa, late 1890s or early 1900s
Child near boulder in field, Newton Township, Iowa, late 1890s or early 1900s
Illinoian boulders, late 1890s or early 1900s
Granite boulder belonging to Iowan Drift, Mason City, Iowa, late 1890s or early 1900s
Botanical Laboratory, south room, Old Science Hall
Old Science Hall on the University of Iowa campus, Iowa City
Geological chart of Iowa in Geological Lecture room, Old Science Hall, The University of Iowa, December 13, 1899
Geological Laboratory, Old Science Hall, The University of Iowa, 1899
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