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Cracked gumbotil and contact with loess above, Iowa, July 25, 1924

Located in Monroe and 1 Athens Twp., middle of east half of line between Sections 36.

Crumbling granite boulders, English Township, Iowa, June 30, 1924

Located in English Twp., middle of N.W. quarter, Section 23.

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.

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.

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.

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.

Top picture: Dodgeville peneplain at an elevation of 1260 ft., Asbury, Iowa, 1920s. Bottom picture: Lancaster peneplain northeast of Waukon, Iowa, 1920s

Dean G.F. Kay's car, after wind storm

Chariton, Tourist Park

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

Located in Union Twp., Section 23, south half of S.E. quarter.

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.

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