Atlas of historical county boundaries.
By: John H. Long, editor ; compiled by Gordon DenBoer.
Contributors: DenBoer, Gordon, 1933-
Publisher: Simon & Schuster
Published: 1996
Place of publication: New York
Language: eng
Number of pages: 241
Subjects: Pennsylvania -- Administrative and political divisions -- Maps.; Pennsylvania -- Historical geography -- Maps.; Pennsylvania -- History.
Notes: Includes bibliography.