Diamond Island, Columbia River, Oregon, 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"“Near the end of Diamond island are two others, separated by a narrow channel filled at high tides only…”"
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 ten o’clock we resumed our route along the north side of the river, and having passed Diamond island, and Whitebrant island, halted for the night at the lower point of a handsome prairie."