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Collection: Calvin Geological Photographs
Browse Items (748 total) for Calvin Geological Photographs
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Gravel pit with stratification in gravels, east side of Afton Junction, Iowa, late 1890s or early 1900s
Dip of quartzite to the South of Court House, Sioux Falls, S.D., late 1890s or early 1800s
Chalk cliff near Old Grills Mill on Sioux River south of Westfield, Iowa, late 1890s or early 1900s
Atwood Quarry, Iowa, late 1890s or early 1900s
Weathered face of Galena Limestone near Walter's Furnace, Dubuque, Iowa, late 1890s or early 1900s
Walter's smelter, Dubuque, Iowa, late 1890s or early 1900s
Top works of Platt Mine, Iowa, late 1890s or early 1900s
Geology Laboratory, north room, Old Science Hall, The University of Iowa, late 1890s or early 1900s
Valley of Little Sioux River north of Fox Creek, Iowa, late 1890s or early 1900s
Boulder of Iowan age, near the southeast corner of the park, Nora Springs, Iowa, late 1890s or early 1900s
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