Good-humoured island, Missouri River, United States (Google Maps ⧉, OpenStreetMap ⧉)
Referenced In
History of the Expedition under the Command of Captains Lewis and Clark / To the Sources of the Missouri, Thence Across the Rocky Mountains and Down the River Columbia to the Pacific Ocean
by Meriwether Lewis, William Clark"At eleven and a half miles, we passed an island on the north, which we called Good-humoured island; it is about one and a half miles long, and abounds in elk."