The Evolution of transportation in western Pennsylvania.
Contributors: United States. National Park Service. Denver Service Center.; United States. Dept. of the Interior. Southwestern Pennsylvania Heritage Preservation Commission.
Series: Special history study
Publisher: U.S. Dept. of the Interior, National Park Service, Denver Service Center
Published: 1994
Place of publication: [Denver, Colo.]
Language: eng
Number of pages: 153
Subjects: Transportation -- Pennsylvania -- History.; Trails -- Pennsylvania -- History.; Canals -- Pennsylvania -- History.; Railroads -- Pennsylvania -- History.; Roads -- Pennsylvania -- History.
Notes: Includes bibliographical references (p. 145-152).
"Southwestern Pennsylvania Heritage Preservation Commission"--P. [4] of Cover.
"May 1994."
"NPS D-94"--P. [3] of Cover.
Shipping list no.: 94-0250-P.