St. Joseph's Island, 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"A channel from the bed of the Missouri once ran into this river, and formed an island called St. Joseph's, but the channel is now filled up, and the island is added to the northern shore."