Search results

Clay pit of Mason City Brick and Tile Company, Mason City, Iowa, late 1890s or early 1900s

Effects of expansion of ice along margin of Clear Lake, Clear Lake, Iowa, late 1890s or early 1900s

Effects of expansion of ice along margin of Clear Lake, Clear Lake, Iowa, 1890s

Heaving of ice along margin of Clear Lake, Iowa, late 1890s or early 1900s

Mason City Brick and Tile Company seen from northeast, Mason City, Iowa, late 1890s or early 1900s

Moraine northwest of Swaledale, Iowa, 1890s

Kuppinger Quarry, Mason City, Iowa, 1890s

Willow Creek near Parker's Mill, Mason City, Iowa, 1890s

Kames, Thornton, Iowa, late 1890s or early 1900s

Thinning of Devonian beds, Portland, Iowa, 1890s

Exposure of Devonian on Willow Creek near Parker's Mill, Mason City, Iowa, late 1890s or early 1900s

Works of the Mason City Brick and Tile Company, from the southeast, Mason City, Iowa, 1890s

Vermilya's Bluff above the Shell Rock River, Cedar Valley, Iowa, 1890s

Abandoned channel of Lime Creek, Mason City, Iowa, 1890s

Stratified clays in clay pit of Mason City Brick and Tile Works, Mason City, Iowa, late 1890s or early 1900s

Boulders from the marginal moraine of the Wisconsin Drift Sheet, Clear Lake, Iowa, late 1890s or early 1900s

Granite boulder belonging to Iowan Drift, Mason City, Iowa, 1890s

Plat book of Cerro Gordo County, Iowa, 1895

Iowa land survey map of t096n, r022w

Iowa land survey map of t097n, r022w

Iowa land survey map of t097n, r020w

Iowa land survey map of t096n, r021w

Iowa land survey map of t097n, r019w

Iowa land survey map of t096n, r020w

Iowa land survey map of t097n, r021w

Iowa land survey map of t094n, r019w

Iowa land survey map of t094n, r020w

Iowa land survey map of t095n, r021w

Iowa land survey map of t095n, r019w

Iowa land survey map of t095n, r020w

Iowa land survey map of t094n, r021w

Iowa land survey map of t094n, r022w

Iowa land survey map of t096n, r019w

Iowa land survey map of t095n, r022w

Cerro Gordo County, Iowa, 1939, aerial photomosaic index

Cerro Gordo County, Iowa, 1958, aerial photomosaic index

Cerro Gordo County, Iowa, 1953, aerial photomosaic index

Cerro Gordo County, Iowa, 1965, aerial photomosaic index

Cerro Gordo County, Iowa, 1970, aerial photomosaic index

Cerro Gordo County, Iowa, 1980, aerial photomosaic index

Plat book of Cerro Gordo County, Iowa, 1930

Atlas of Cerro Gordo County, Iowa, 1912

Meservey, Iowa. CGW

Thornton, Iowa. CGW

Ventura, Iowa. MILW

Clear Lake, Iowa. MCCL

Burchinal, Iowa. CNW

Mason City, Iowa. MILW