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Old green shales bed of the Lower Trenton with natural size Orthis Dlamanella,subeauata, con. and Orthis Tricenaria con, Waukon, Iowa, late 1890s or early 1900s

Old green shales bed of the Lower Trenton with natural size Orthis Dlamanella,subeauata, con. and Orthis Tricenaria con, Waukon, Iowa, late 1890s or early 1900s

Slab of limestone from the Middle Devonian with long winged variety of Spirifer Mucronatus con of natural size, late 1890s or early 1900s

Slab of limestone from the Middle Devonian with long winged variety of Spirifer Mucronatus con of natural size, late 1890s or early 1900s

Near Arkona. Class plate.
Favosites niagarensis, with stems of Amplexus associated with it, Monticello, Iowa, late 1890s or early 1900s

Favosites niagarensis, with stems of Amplexus associated with it, Monticello, Iowa, late 1890s or early 1900s

Located 6 miles southeast of Monticello.
Aftonian, Kansan Drift, Buchanan gravels, Illinoian Drift, Sangamon sands, and Loess, Muscatine, Iowa, late 1890s or early 1900s

Aftonian, Kansan Drift, Buchanan gravels, Illinoian Drift, Sangamon sands, and Loess, Muscatine, Iowa, late 1890s or early 1900s

Glacial planed pebbles from drift, Iowa City, Iowa, late 1890s or early 1900s

Glacial planed pebbles from drift, Iowa City, Iowa, late 1890s or early 1900s

Glacial planed limestone, west of Clear Creek near the old woolen mill, Iowa City, Iowa, late 1890s or early 1900s

Glacial planed limestone, west of Clear Creek near the old woolen mill, Iowa City, Iowa, late 1890s or early 1900s

Old Power Plant, The University of Iowa, 1900s

Old Power Plant, The University of Iowa, 1900s

Old Capitol visible in background.
Dam and powerhouse, Iowa City, Iowa, 1900s

Dam and powerhouse, Iowa City, Iowa, 1900s

Iowa Avenue, Iowa City, Iowa, 1900s

Iowa Avenue, Iowa City, Iowa, 1900s

View down Iowa Avenue toward Old Capitol.
Dental Museum, The University of Iowa, 1900s

Dental Museum, The University of Iowa, 1900s