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Collection: Calvin Geological Photographs
Browse Items (748 total) for Calvin Geological Photographs
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Railroad cars at Iowa Ballast Construction Co., Maxon, Iowa, late 1890s or early 1900s
Coal Measure Sandstone on Raccoon River, Iowa, late 1890s or early 1900s
Cretaceous clay in drift, Coon Rapids, Iowa, late 1890s or early 1900s
Coon Rapids
St. Louis Limestone east of Harvey, Iowa, late 1890s or early 1900s
Iowa Pipe and Tile Works, Des Moines, Iowa, late 1890s or early 1900s
Flint Brick Company clay pit, Des Moines, Iowa, late 1890s or early 1900s
Plant of Platt Pressed and Fire Brick Company, Van Meter, Iowa, late 1890s or early 1900s
Firing of the kiln, Iowa Ballast and Construction Co., Maxon, Iowa, late 1890s or early 1900s
Men on railroad cars near Iowa Ballast and Construction Co., Maxon, Iowa, late 1890s or early 1900s
Loading out burned clay and ballast, Davis City, Iowa, September 1897
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