Three-thousand-mile 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"Here we reached the lower point of a large island which we called Three-thousand-mile island, on account of its being at that distance from the mouth of the Missouri."
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"…encamped on the eastern side of the river, opposite the head of the Three-thousand mile island."