Geological map of the state of Pennsylvania : constructed from original surveys made between 1836 and 1857
Relief shown by hachures.; "To accompany the final report on the Geological Survey of the state 1858."; "Entered according to act of Congress, in the year 1858, by Henry D. Rogers ... Eastern District of Pennsylvania."; Washington D.C. meridian.
88 x 176 centimeters, sheets 74 x 95 centimeters
Scale approximately 1:330,000
General Map Collection
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