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

"June 1989"--P. [2].

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