"*GPO: 2001--472-470/00393. Reprint 2001." English. Legend and table also in Spanish. Includes text, location map, inset, and detail map of Diablo East. "Do not use this map for navigation." Text and ill. on verso. Available also through the Library of Congress Web site as a raster image.
United States. National Park Service
2001
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/2002625063/">https://www.loc.gov/item/2002625063/</a>