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Collection: Calvin Geological Photographs
Browse Items (748 total) for Calvin Geological Photographs
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Boulder field, Newton Township, Iowa, late 1890s or early 1900s
Cedar River from top of Old McCune Quarry, Cedar Township, Iowa, late 1890s or early 1900s
Man by Illinoian Drift between two igneous deposits, Muscatine, Iowa, late 1890s or early 1900s
Abandoned channel of Lime Creek, Mason City, Iowa, late 1890s or early 1900s
Buchanan gravels, Winthrop, Iowa, late 1890s or early 1900s
Iowa River as a characteristic stream of the drift covered area, Old Capital Quarries, Iowa, late 1890s or early 1900s
Lake Minnewashta south of Spirit Lake, Iowa, late 1890s or early 1900s
Lake Minnewashta south of Spirit Lake, Iowa, late 1890s or early 1900s
Man in front of beds, Muscatine, Iowa, late 1890s or early 1900s
Hill of Kansan Drift in wall of valley of Iowa River, Belle Plaine, Iowa, late 1890s or early 1900s
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