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Collection: Calvin Geological Photographs
Browse Items (748 total) for Calvin Geological Photographs
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Huronian, showing erosion in the Palisades State Park on Split Rock Creek, Garretson, S. D., late 1890s or early 1900s
Erosion and Huronian glaciation of Split Rock Creek, Palisades, S.D., late 1890s or early 1900s
Erosion and Huronian glaciation of Split Rock Creek, Palisades, S.D., late 1890s or early 1900s
"The Mound" residence on west side of a field showing Sioux Quartzite and Huronian glaciation, north of Luverne, Minn., late 1890s or early 1900s
"The Mound", North of Luverne, Minnesota
Queen Bee Mill behind ledges of Sioux Quartzite at Sioux Falls, S.D., late 1890s or early 1900s
Ledges of Sioux Quartzite at Sioux Falls, S.D., late 1890s or early 1900s
Special forms in the Garden of the Gods, Colorado Springs, Colo., late 1890s or early 1900s
Open pit mine, Iowa, late 1890s or early 1900s
Overland hill, Iowa, late 1890s or early 1900s
Jimtown Gateway from Red Mountain to the canyon of Left Hand Creek, Colo., late 1890s or early 1900s
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