"September 1999." Covers the western United States. Includes descriptive list of national grasslands by state. Text and ill. (some col.) on verso. Available also through the Library of Congress Web site as a raster image.
United States. Forest Service
1999
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/00562063/">https://www.loc.gov/item/00562063/</a>