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Collection: Calvin Geological Photographs
Browse Items (748 total) for Calvin Geological Photographs
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Bridge over Sioux River and Sioux Quartzite ledges, Dell Rapids, South Dakota, late 1890s or early 1900s
Bridge over Sioux River, Dell Rapids, South Dakota
"The Dells" canyon in Sioux Quartzite, Dell Rapids, South Dakota, late 1890s or early 1900s
Dakota Formation with clays and shales, Sioux Paving Brick Company, Riverside, Iowa, late 1890s or early 1900s
Bluffs of Kettle Creek, Millersville, Iowa, late 1890s or early 1900s
Located below Millersville.
Diabase ledge and riffle in Split Rock Creek, Ristie's Farm, Corson, S.D., late 1890s or early 1900s
Canyon in Sioux Quartzite, Dell Rapids, South Dakota, late 1890s or early 1900s
Sandstone interbedded with shale from Des Moines Stage at Currier's Mill, Oskaloosa, Iowa, late 1890s or early 1900s
Goldthorpe's Zinc Mine, Durango, Iowa, late 1890s or early 1900s
Court House on the Sioux River, Sioux Falls, S.D., late 1890s or early 1900s
Cross-bedding in Sioux Quartzite, Sioux Falls, S.D., late 1890s or early 1900s
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