Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (1467 total)

Crumbling granite boulders, English Township, Iowa, June 30, 1924

Crumbling granite boulders, English Township, Iowa, June 30, 1924

Located in English Twp., middle of N.W. quarter, Section 23.
Iowan till over Kansan gumbotil, soil on top of the gumbotil, Wayne Township, Iowa, July 8, 1924

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.
West side of the Lake Calvin Basin seen from the heights north of Columbus Junction, Iowa, June 14, 1924

West side of the Lake Calvin Basin seen from the heights north of Columbus Junction, Iowa, June 14, 1924

Lake Calvin is now known as Goose Lake.
West side of the Lake Calvin Basin seen from the heights north of Columbus Junction, Iowa, June 14, 1924

West side of the Lake Calvin Basin seen from the heights north of Columbus Junction, Iowa, June 14, 1924

Looking North. Lake Calvin is now known as Goose Lake.
Erosion in till and loess, Cass Township, Iowa, July 18, 1924

Erosion in till and loess, Cass Township, Iowa, July 18, 1924

Located in Cass Twp., middle of north line of south section 6, just west of Panora.
Top picture: Dodgeville peneplain at an elevation of 1260 ft., Asbury, Iowa, 1920s. Bottom picture: Lancaster peneplain northeast of Waukon, Iowa, 1920s

Top picture: Dodgeville peneplain at an elevation of 1260 ft., Asbury, Iowa, 1920s. Bottom picture: Lancaster peneplain northeast of Waukon, Iowa, 1920s

Granite boulder, 24x21x10 feet, Union Township, Iowa, June 20, 1924

Granite boulder, 24x21x10 feet, Union Township, Iowa, June 20, 1924

Located in Union Twp., Section 23, south half of S.E. quarter.
Lower coal measure limestone, Mystic, Iowa, late 1890s or early 1900s

Lower coal measure limestone, Mystic, Iowa, late 1890s or early 1900s

Railroad car at Mystic Coal mine, Mystic, Iowa, late 1890s or early 1900s

Railroad car at Mystic Coal mine, Mystic, Iowa, late 1890s or early 1900s

Coal at Richardson's Mine, Iowa, late 1890s or early 1900s

Coal at Richardson's Mine, Iowa, late 1890s or early 1900s

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