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Collection: Calvin Geological Photographs
Browse Items (748 total) for Calvin Geological Photographs
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E.J.C. Bealer's Quarry, view looking down the river, Cedar Valley, Iowa, late 1890s or early 1900s
East ridge bordering the North Liberty Plain near Cemetery Hill, North Liberty, Iowa late 1890s or early 1900s
Located three miles north of North Liberty.
East wall of "The Mound", north of Luverne, Minn., late 1890s or early 1900s
Effect of geological structure on topography, Graf, Iowa, late 1890s or early 1900s
Effects of expansion of ice along margin of Clear Lake, Clear Lake, Iowa, late 1890s or early 1900s
Effects of expansion of ice along margin of Clear Lake, Clear Lake, Iowa, late 1890s or early 1900s
Effects of weathering on a bluff of limestone illustrating thin bedding, etc., Iowa, late 1890s or early 1900s
Located in Twp. 96, R. VI, Section 17, S.E. gr., S.E. 1/4.
Effects of weathering on a bluff of Trenton Limestone, Postville, Iowa, late 1890s or early 1900s
Located in Twp. 96, R. VI, Section 17, S.E. gr., S.E. 1/4 north of Postville.
El Capitan Granite and jointed granite of Yosemite Quadrangle at the summit of ridge south of head of Morrison Creek, Calif., late 1890s or early 1900s
Elk Cliff with Coal Measure Sandstone on Des Moines River, Rosseau, Iowa, late 1890s or early 1900s
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