United States, 39.76, -98.5Wilkes, Charles, 1798-18771842Possibly detached from: Synopsis of the cruise of the U.S. exploring expedition, during the years 1838, '39, '40, '41 & '42.Relief shown by hachures.Scale [ca. 1:500,000,000]image/jp2S.l. : s.n.http://rightsstatements.org/vocab/NoC-US/1.0/United States Exploring Expedition (1838-1842)--MapsVoyages around the world--MapsDiscoveries in geography--American--MapsWorld mapsChart of the world shewing the tracks of the U.S. Exploring Expedition : in 1838, 39, 40, 41 & 42 / Charles Wilkes, Esq., Commander.StillImage