Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (55 total)

The effects of geologic structure on topographic form within the driftless area. The gently undulating, lower slopes are underlain by Maquoketa Shale, the steep hills in the background are of the overlying Niagaran Limestone. Graf, Iowa, late 1890s or early 1900s

The effects of geologic structure on topographic form within the driftless area. The gently undulating, lower slopes are underlain by Maquoketa Shale, the steep hills in the background are of the overlying Niagaran Limestone. Graf, Iowa, late 1890s or early 1900s

Located south from Lattner's, near Graf.
The effects of geologic structure on topographic form within the driftless area. The gently undulating, lower slopes are underlain by Maquoketa Shale, the steep hills in the background are of the overlying Niagaran Limestone. Graf, Iowa, late 1890s or early 1900s

The effects of geologic structure on topographic form within the driftless area. The gently undulating, lower slopes are underlain by Maquoketa Shale, the steep hills in the background are of the overlying Niagaran Limestone. Graf, Iowa, late 1890s or early 1900s

Located south from Lattner's, near Graf.
Topography of Iowan Drift area, Massilon Township, Iowa, July 18, 1925

Topography of Iowan Drift area, Massilon Township, Iowa, July 18, 1925

Located in Massilon Twp., sections 29 and 32.
Topography of Iowan Drift area, Massilon Township, Iowa, July 18, 1925

Topography of Iowan Drift area, Massilon Township, Iowa, July 18, 1925

Located in Massilon Twp., sections 29 and 32.
Typical Kansan topography, Tipton, Iowa, late 1890s or early 1900s

Typical Kansan topography, Tipton, Iowa, late 1890s or early 1900s

Typical Kansan topography, Tipton, Iowa, late 1890s or early 1900s

Typical Kansan topography, Tipton, Iowa, late 1890s or early 1900s

Typical landscape in region covered with deep loess, near border of Iowan Drifts, Graham Township, Iowa, late 1890s or early 1900s

Typical landscape in region covered with deep loess, near border of Iowan Drifts, Graham Township, Iowa, late 1890s or early 1900s

Typical landscape in region covered with deep loess, near border of Iowan Drifts, Graham Township, Iowa, late 1890s or early 1900s

Typical landscape in region covered with deep loess, near border of Iowan Drifts, Graham Township, Iowa, late 1890s or early 1900s

Valley of Little Sioux River seen from the West and the mouth of Fox Creek, Iowa, late 1890s or early 1900s

Valley of Little Sioux River seen from the West and the mouth of Fox Creek, Iowa, late 1890s or early 1900s

Valley of Little Sioux River seen from the West and the mouth of Fox Creek, Iowa, late 1890s or early 1900s

Valley of Little Sioux River seen from the West and the mouth of Fox Creek, Iowa, late 1890s or early 1900s

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