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Collection: Calvin Geological Photographs
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Pleistocene Fauna, foot bones of Aftonian horses, late 1890s or early 1900s
Geology Club on the steps of Old Science Hall, The University of Iowa, May 24, 1916
Steep headwater slopes of the tributaries of Buck Creek, Washington, Iowa, October 21, 1918
Located in Washington Twp. sections 9 and 10.
Cladopora iowensis from Butler's Landing north of Iowa City, Iowa, late 1890s or early 1900s
Cladopora Iowensis from Butler's Landing north of Iowa City, Iowa, late 1890s or early 1900s
Rocks in front of Old Science Hall, The University of Iowa, late 1890s or early 1900s
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
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.
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