Natural range of  American Hornbeam (<i>Carpinus caroliniana</i>).
Digital representation of "Atlas of United States Trees" by Elbert L. Little, Jr. 1999. U.S. Geological Survey. <a rel="nofollow" class="external autonumber" href="https://esp.cr.usgs.gov/data/atlas/little/">[1]</a>
Elbert L. Little, Jr. 1999. U.S. Geological Survey.
Atlas of United States Trees