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Collection: Calvin Geological Photographs
Browse Items (748 total) for Calvin Geological Photographs
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Open pit mine, Iowa, late 1890s or early 1900s
Special forms in the Garden of the Gods, Colorado Springs, Colo., late 1890s or early 1900s
Ledges of Sioux Quartzite at Sioux Falls, S.D., late 1890s or early 1900s
Queen Bee Mill behind ledges of Sioux Quartzite at Sioux Falls, 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
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
Huronian, showing erosion in the Palisades State Park on Split Rock Creek, Garretson, S. D., late 1890s or early 1900s
Carboniferous shale, Mena, Ark., late 1890s or early 1900s
Located east of Mena, Arkansas.
Carboniferous sandstone cliffs near Boneyard Hollow in Dolliver Memorial State Park, Lehigh, Iowa, late 1890s or early 1900s
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