"*GPO: 1987--181-415/60024." Relief shown by shading and spot heights. Panel title. Alternate panel title: Guadalupe Mountains National Park, Texas. Includes text and col. ill. Sketch map of "Capitan reef today," text, and col. ill. on verso. Available also through the Library of Congress Web site as a raster image.
United States. National Park Service
1987
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/87693806/">https://www.loc.gov/item/87693806/</a>