Cover image for Summit Unit site concept study : Allegheny Portage Railroad National Historic Site, Pennsylvania.
Title:
Summit Unit site concept study : Allegheny Portage Railroad National Historic Site, Pennsylvania.
Author:
United States. National Park Service.
Publication Information:
[Denver] : U.S. Dept. of the Interior, National Park Service, [1987]
Physical Description:
34 pages : maps ; 28 cm
General Note:
Shipping list no.: 88-211-P.

Cover title: Summit Unit : Allegheny Portage Railroad National Historic Site, Pennsylvania.

"December 1987"--P. [3] of cover.

"NPS D-21"--P. [3] of cover.
Language:
English
Format :
Book