Author: Rogers, Henry D. - Geological Survey of Pennsylvania - Rogers, Henry D. (Henry Darwin) - W. & A.K. Johnston Limited Source:Library of Congress - Maps Usage Rights: Publication Date: 1857 View Map
Author: Geological Survey of Pennsylvania - Rogers, Henry D. (Henry Darwin) - W. & A.K. Johnston Limited Source:Library of Congress - Maps Usage Rights: Publication Date: 1857 View Map
Author: Williams, W. - Williams, W. (Wellington) - Lesley, J. P. (J. Peter) - Herline & Hensel - Desilver, Charles Source:Library of Congress - Maps Usage Rights: Publication Date: 1857 View Map
Author: United States. Department of the Interior. Southwestern Pennsylvania Heritage Preservation Commission Source:Library of Congress - Maps Usage Rights: Publication Date: 1995 View Map
Author: United States. Department of the Interior. Southwestern Pennsylvania Heritage Preservation Commission Source:Library of Congress - Maps Usage Rights: Publication Date: 1998 View Map
Author: United States. National Park Service - America's Industrial Heritage Project Source:Library of Congress - Maps Usage Rights: Publication Date: 1989 View Map
Author: United States. Bureau of the Census. Data Preparation Division - United States. Bureau of the Census. Geography Division Source:Library of Congress - Maps Usage Rights: Publication Date: 1980 View Map
Author: United States. Forest Service - United States. Forest Service. Eastern Region Source:Library of Congress - Maps Usage Rights: Publication Date: 1965 View Map
Author: United States. Forest Service - United States. Forest Service. Eastern Region Source:Library of Congress - Maps Usage Rights: Publication Date: 1981 View Map