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Collection: Calvin Geological Photographs
Browse Items (748 total) for Calvin Geological Photographs
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Fish teeth found in Old State Quarry beds, North Liberty, Iowa, late 1890s or early 1900s
Fish teeth found in Old State Quarry beds, North Liberty, Iowa, late 1890s or early 1900s
Fish teeth found in Old State Quarry beds, North Liberty, Iowa, late 1890s or early 1900s
Family party at the home of R.G. Crawford, Hopkinton, Iowa, 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
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