Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (154 total)

Man standing at top of waterfall in Devil's Den, Iowa, late 1890's or early 1900s

Man standing at top of waterfall in Devil's Den, Iowa, late 1890's or early 1900s

"Devil's Den" located at Twp. 99, R. V, Section 19, N.W. gr., N.E. 1/4, N.E. corner.
Weathered face of Galena Limestone near Walter's Furnace, Dubuque, Iowa, late 1890s or early 1900s

Weathered face of Galena Limestone near Walter's Furnace, Dubuque, Iowa, late 1890s or early 1900s

Julien Dubuque Monument made of Galena Limestone, Dubuque, Iowa, late 1890s or early 1900s

Julien Dubuque Monument made of Galena Limestone, Dubuque, Iowa, late 1890s or early 1900s

Rocks in the valley of the Yellow River, Iowa, late 1890s or early 1900s

Rocks in the valley of the Yellow River, Iowa, late 1890s or early 1900s

Located in Twp. 96, R.V., Section 14, S.W. gr., N.W. 1/4.
Bluffs on Upper Iowa or Oneota River, Decorah, Iowa, late 1890s or early 1900s

Bluffs on Upper Iowa or Oneota River, Decorah, Iowa, late 1890s or early 1900s

Effects of weathering on a bluff of Trenton Limestone, Postville, Iowa, late 1890s or early 1900s

Effects of weathering on a bluff of Trenton Limestone, Postville, Iowa, late 1890s or early 1900s

Located in Twp. 96, R. VI, Section 17, S.E. gr., S.E. 1/4 north of Postville.
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

Gorge in Trenton Limestone at Pinney's Spring, Iowa, late 1890s or early 1900s

Gorge in Trenton Limestone at Pinney's Spring, Iowa, late 1890s or early 1900s

Located in Twp. 95, R.V. Section 34, S.W. gr. N.W. 1/4.
Owl's Head Mountain capped by Oneota Limestone (a hill of circumdenudation over 300 feet high), Iowa, late 1900s or early 1900s

Owl's Head Mountain capped by Oneota Limestone (a hill of circumdenudation over 300 feet high), Iowa, late 1900s or early 1900s

Located in Twp. 99, R.V. Section I, N.W. gr.
Oneota River near Bluffton, Iowa, late 1890s or early 1900s.

Oneota River near Bluffton, Iowa, late 1890s or early 1900s.

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