Geologic map of Pennsylvania.
Subtitle: Pennsylvania Geologic Survey, 4th ser.
By: Compiled and edited by Carlyle Gray [and others] A. E. Van Olden, draftsman
Contributors: Gray, Carlyle
Published: 1960
Place of publication: [Harrisburg
Language: eng
Number of pages: 201
Subjects: Geology -- Pennsylvania -- Maps
Genres: Maps
Notes: Scale 1:250,000; 1 inch equals approximately 4 miles

Issued in envelope

"Base compiled from Army Map Service 1:250,000 scale map sheets."

Includes 4 col. cross sections and "Source of date index map."