Aerial view drawn to resemble a block diagram. "*GPO:2001--472-470/40012. Reprint 2001." Relief shown by shading. Panel title. Includes text, index of cable 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.
United States. National Park Service; Townsend, L. Kenneth
2001
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/2001622625/">https://www.loc.gov/item/2001622625/</a>