Echoes of the past
Subtitle: pathways to the future.
Contributors: America's Industrial Heritage Project.; United States. National Park Service
Publisher: Heritage Preservation Commission, America's Industrial Heritage Project
Published: 1987
Place of publication: Cressen, Pa
Language: eng
Subjects: Historic sites -- Pennsylvania.
Notes: Prepared by the National Park Service in cooperation with the Heritage Preservation Commission.

"March 1987"--P. [4] of cover.

"NPS D-16"--P. [4] of cover.