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Browse Items (8 total)

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Exposure of Upper Coal Measures and Carboniferous, Hawleyville, Iowa, late 1890s or early 1900s

Exposure of Upper Coal Measures and Carboniferous, Hawleyville, Iowa, late 1890s or early 1900s

Quarry in Upper Coal Measures, old workings showing separation of stone into ledges, Earlham, Iowa, late 1890s or early 1900s

Quarry in Upper Coal Measures, old workings showing separation of stone into ledges, Earlham, Iowa, late 1890s or early 1900s

New workings in quarry in Upper Coal Measures, Earlham, Iowa, late 1890s or early 1900s

New workings in quarry in Upper Coal Measures, Earlham, Iowa, late 1890s or early 1900s

Exposure of Upper Coal Measures, Essex, Iowa, late 1890s or early 1900s

Exposure of Upper Coal Measures, Essex, Iowa, late 1890s or early 1900s

Located southeast of Essex.
Exposure of Upper Coal Measures and Carboniferous, Hawleyville, Iowa, late 1890s or early 1900s

Exposure of Upper Coal Measures and Carboniferous, Hawleyville, Iowa, late 1890s or early 1900s

Quarry in Upper Coal Measures, old workings showing separation of stone into ledges, Earlham, Iowa, late 1890s or early 1900s

Quarry in Upper Coal Measures, old workings showing separation of stone into ledges, Earlham, Iowa, late 1890s or early 1900s

New workings in quarry in Upper Coal Measures, Earlham, Iowa, late 1890s or early 1900s

New workings in quarry in Upper Coal Measures, Earlham, Iowa, late 1890s or early 1900s

Exposure of Upper Coal Measures, Essex, Iowa, late 1890s or early 1900s

Exposure of Upper Coal Measures, Essex, Iowa, late 1890s or early 1900s

Located southeast of Essex.
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