America's Industrial Heritage Project
Subtitle: southwestern Pennsylvania
Contributors: United States. National Park Service
Publisher: U.S. Dept. of the Interior, National Park Service
Published: 1989
Place of publication: [Washington, D.C.?
Language: eng
Subjects: America's Industrial Heritage Project; Historic sites -- Pennsylvania
Notes: Shipping list no.: 89-515-P

"June 1989"--P. [2]

"NPS D-2"--P. [2]