Aplomado Falcon, adult, <i>Falco femoralis</i>, hand-colored lithograph
United States Government, War Department
1859
Reports of Explorations and Surveys.... Volume X. 1859 of the U. S. Pacific railroad Explorations and Surveys 38th, 39th, 41st Parallels, <a rel="nofollow" class="external free" href="http://www.photolib.noaa.gov/library/">http://www.photolib.noaa.gov/library/</a>