Geological and topographical map of the anthracite fields of Pennsylvania : constructed from original explorations and surveys
Relief shown by hachures.; Shows 3 categories of "coal measures," umbral, vespertine, railroads, tunnels, mines, section lines, and populated places.; "Entered according to Act of Congress in the Year 1858 by Henry D. Rogers in the Clerks Office of the District Court of the United States in and for the Eastern District of Pennsylvania."
sheets 74 x 94 centimeters
Scale not given.
General Map Collection
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