Allegheny Portage Railroad National Historic Site, Pennsylvania

Aerial view drawn to resemble a block diagram.
"*GPO: 1998--432-903/60256. Reprint 1998."
Relief shown by shading.
Panel title.
Includes text, index of inclines, and ill. (some col.).
Text, small map of site, and col. ill. on verso.
Available also through the Library of Congress Web site as a raster image.