Gass's Creek, 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"Behind one of them is a large creek twenty-five yards wide, to which we gave the name of Gass's creek, from one of our serjeants, Patrick Gass: it is formed by the union of five streams, which descend from the mountains and join in the plain near the river."