這是路易士和克拉克遠征隊的地圖，你知道達科達在哪裡嗎？

出處: Lewis, Samuel. "A map of Lewis and Clark's track, across the western portion of North America from the Mississippi to the Pacific Ocean: by order of the executive of the United States in 1804, 5 & 6 / copied by Samuel Lewis from the original drawing of Wm. Clark ; Saml. Harrison, fct.." 1814. Map Collections: 1544-1999, Library of Congress.