The evolution of transportation in western Pennsylvania
Contributors: United States. Department of the Interior. Southwestern Pennsylvania Heritage Preservation Commission
Series: Special history study
Publisher: U.S. Department of the Interior, National Park Service, Denver Service Center
Published: 1994
Place of publication: Denver, Colo.?]
Language: eng
Number of pages: 153
Subjects: Trails; History; Canals; Transportation; Railroads; Roads
Notes: Shipping list no.: 94-0250-P.

"Southwestern Pennsylvania Heritage Preservation Commission"--P. [4] of Cover.

"May 1994."

"NPS D-94"--P. [3] of Cover.

Includes bibliographical references (p. 145-152).