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Collection: Calvin Geological Photographs
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Kansan topography, Welton Township, Iowa, June 18, 1925
Located in the middle of section 4 of Welton Township.
Iowan Drift area topography, Spring Rock Township, Iowa, June 18, 1925
Located in Spring Rock Twp. on the middle of line between sections 6 and 7.
Granite boulder, 24x21x10 feet, Union Township, Iowa, June 20, 1924
Located in Union Twp., Section 23, south half of S.E. quarter.
Dean G.F. Kay's car, after wind storm
Chariton, Tourist Park
Top picture: Dodgeville peneplain at an elevation of 1260 ft., Asbury, Iowa, 1920s. Bottom picture: Lancaster peneplain northeast of Waukon, Iowa, 1920s
Erosion in till and loess, Cass Township, Iowa, July 18, 1924
Located in Cass Twp., middle of north line of south section 6, just west of Panora.
West side of the Lake Calvin Basin seen from the heights north of Columbus Junction, Iowa, June 14, 1924
Looking North. Lake Calvin is now known as Goose Lake.
West side of the Lake Calvin Basin seen from the heights north of Columbus Junction, Iowa, June 14, 1924
Lake Calvin is now known as Goose Lake.
Iowan till over Kansan gumbotil, soil on top of the gumbotil, Wayne Township, Iowa, July 8, 1924
View looking east near middle of north line of Section 30 in Wayne Township.
Crumbling granite boulders, English Township, Iowa, June 30, 1924
Located in English Twp., middle of N.W. quarter, Section 23.
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