Covers: Grand atlas, Division I. : County geological maps, Part 1. Contains fifty six county maps on forty nine sheets.

(Covers to) Grand atlas, Division I. : County geological maps, Part 1. Contains fifty six county maps on forty nine sheets. Second Geological Survey of Pennsylvania. J.P. Lesley, State Geologist. Harrisburg. 1885. Lane S. Hart, State Printer. Julius Bien & Co. Lith.

Geological Survey of Pennsylvania

1885

1885

Second Geological Survey of Pennsylvania

1:2 534 400

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