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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.

Kansan gumbotil with Illinoian till above on Miller Farm, Washington Township, Iowa, July 10, 1925

Located on Miller Farm in Washington Twp., SW 1/4, section 28 on the east side of the railroad tracks.

Kansan gumbotil with Iowa topography in the background, Massilon Township, Iowa, July 18, 1925

Located in Massilon Twp. sections 30 and 31.

Kansan gumbotil with Iowan till above, Lincoln Township, Iowa, June 24, 1925

Located in Lincoln Twp. south of line between sections 34 and 35.

Kansan gumbotil, Lincoln Township, Iowa, June 21, 1925

Located in Lincoln Twp., SW 1/4, section 11.

Kansan section showing Peorian loess on Kansan gumbotil, oxidized and leached till, ox, and unleached till, Oregon Township, Iowa, August 1933

Located in Oregon Twp., along Primary 161, at top of hill, South of Long Creek, NW 1/4, section 34, showing roadway.

Kansan gumbotil overlain by Peorian loess, Oregon Township, Iowa, August 1933

Oregon Twp., NW 1/4, section 34

Panorama of Kansan section of Peorian loess on Kansan gumbotil shown in Neg. 7441, Oregon Township, Iowa, August 1933

Located in NW 1/4, section 34 of Oregon Twp. Neg. 7441 can be seen here http://cdm.lib.uiowa.edu/u?/calvin,352

Map of Iowa marked with x on the locations of Kansan gumbotil exposures, Iowa, late 1890s or early 1900s

Map of Iowa with triangles marking the localtions of Nebraskan gumbotil and crosses marking Kansan gumbotil locations, Iowa, late 1890s or early 1900s

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