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Browse Items (225 total)

Iowan Drift area topography, Boulder Township, Iowa, June 19, 1925

Iowan Drift area topography, Boulder Township, Iowa, June 19, 1925

Located in Boulder Twp., corner of sections 1, 2, 11, and 12.
Palisades or high cliff above Mud Hollow, Mount Vernon, Iowa, late 1890s or early 1900s

Palisades or high cliff above Mud Hollow, Mount Vernon, Iowa, late 1890s or early 1900s

Upper Palisades, Mount Vernon, Iowa, late 1890s or early 1900s

Upper Palisades, Mount Vernon, Iowa, late 1890s or early 1900s

Palisades on the right bank of the Cedar River above Mud Hollow, Mount Vernon, Iowa, late 1890s or early 1900s

Palisades on the right bank of the Cedar River above Mud Hollow, Mount Vernon, Iowa, late 1890s or early 1900s

High cliff in the Upper Palisades, Cedar River, Mount Vernon, Iowa, late 1890s or early 1900s

High cliff in the Upper Palisades, Cedar River, Mount Vernon, Iowa, late 1890s or early 1900s

Cold Hollow and Palisades at the entrance on the Cedar River, Mount Vernon, Iowa, late 1890s or early 1900s

Cold Hollow and Palisades at the entrance on the Cedar River, Mount Vernon, Iowa, late 1890s or early 1900s

Falling blocks in Spring Hollow in the Palisades, Mount Vernon, Iowa, late 1890s or early 1900s

Falling blocks in Spring Hollow in the Palisades, Mount Vernon, Iowa, late 1890s or early 1900s

Palisades, Silurian stratigraphy and the Cedar River from the cave, Mount Vernon, Iowa, late 1890s or early 1900s

Palisades, Silurian stratigraphy and the Cedar River from the cave, Mount Vernon, Iowa, late 1890s or early 1900s

Palisades on the Cedar River in winter, Mount Vernon, Iowa, late 1890s or early 1900s

Palisades on the Cedar River in winter, Mount Vernon, Iowa, late 1890s or early 1900s

Deposition in Cedar River at Upper Palisades, Iowa, late 1890s or early 1900s

Deposition in Cedar River at Upper Palisades, Iowa, late 1890s or early 1900s