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Glacial scorings near Kingston and Burlington, Iowa, late 1890s or early 1900s

Glacial scorings near Kingston and Burlington, Iowa, late 1890s or early 1900s

Upper Coal Measure Limestone, Earlham, Iowa, late 1890s or early 1900s

Upper Coal Measure Limestone, Earlham, Iowa, late 1890s or early 1900s

Coal at Richardson's Mine, Iowa, late 1890s or early 1900s

Coal at Richardson's Mine, Iowa, late 1890s or early 1900s

Railroad car at Mystic Coal mine, Mystic, Iowa, late 1890s or early 1900s

Railroad car at Mystic Coal mine, Mystic, Iowa, late 1890s or early 1900s

Lower coal measure limestone, Mystic, Iowa, late 1890s or early 1900s

Lower coal measure limestone, Mystic, Iowa, late 1890s or early 1900s

Granite boulder, 24x21x10 feet, Union Township, Iowa, June 20, 1924

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

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

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

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

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.