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  1. Geological map of the state of Pennsylvania : constructed from original surveys made between 1836 and 1857 (Scanned Map)

    Research Data Services (RDS), Columbia University Libraries, Rogers, Henry D. 1808-1866. (Henry Darwin), and W. & A.K. Johnston Limited. ; Geological Survey of Pennsylvania.
    1836

    This is a scanned version of the paper map entitled: Geological map of the state of Pennsylvania : constructed from original surveys made between ...

  2. Map of the coal fields of Pennsylvania

    1929

    1 sheet, cut in 2 for encapsulation Pennsylvania Geological Survey. Series M : Mineral Resources Report Companion text: Detailed description of coa...

  3. Geological map of Pennsylvania

    1893

    Pennsylvania Geological Survey. (2nd survey) Final Report 1891-95. Companion text: Pennsylvania Geological Survey (2d:1874-1890). Final report orde...

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