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

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
Flat Iowan drift plain in foreground and Loess mantled Kansan drift in the background, North Liberty, Iowa, August 1933

Flat Iowan drift plain in foreground and Loess mantled Kansan drift in the background, North Liberty, Iowa, August 1933

Located northeast of North Liberty, center of section 1, Penn Twp.
Geology Club, The University of Iowa, January 26, 1942

Geology Club, The University of Iowa, January 26, 1942

Hertha Limestone located about 200 feet west of Iron Bridge and south of Squaw Creek, Osceola Township, Iowa, late 1890s or early 1900s

Hertha Limestone located about 200 feet west of Iron Bridge and south of Squaw Creek, Osceola Township, Iowa, late 1890s or early 1900s

Located in Osceolo Twp., about 200 feet West of Iron Bridge, South of Squaw Creek, in the NW 1/4 of the NW 1/4 of section 6.
Bethany Falls Milestone, Clarke County, Iowa, late 1890s or early 1900s

Bethany Falls Milestone, Clarke County, Iowa, late 1890s or early 1900s

Ward Twp., SE 1/4 of the NE 1/4 of section 2
Dome of the courthouse in Nishnabotna River valley, Atlantic, Iowa, late 1890s or early 1900s

Dome of the courthouse in Nishnabotna River valley, Atlantic, Iowa, late 1890s or early 1900s

Looking N.W. across the valley.
Dark brownish sandstone, Lewis, Iowa, late 1890s or early 1900s

Dark brownish sandstone, Lewis, Iowa, late 1890s or early 1900s

Located on the east side of the road one mile south of Lewis.
Man standing in cut for the foundation of women's gymnasium shows Loess overlying Buchanan Gravels, The University of Iowa, late 1890s or early 1900s

Man standing in cut for the foundation of women's gymnasium shows Loess overlying Buchanan Gravels, The University of Iowa, late 1890s or early 1900s

Quartzite concretions in Redrock Sandstone, Iowa, late 1890s or early 1900s

Quartzite concretions in Redrock Sandstone, Iowa, late 1890s or early 1900s

Consideration Mine No. 8, Given, Iowa, late 1890s or early 1900s

Consideration Mine No. 8, Given, Iowa, late 1890s or early 1900s