Patrick Gass

Lewis and Clark's Journal to the Rocky Mountains in the Years 1804, -5, -6

Journal of the Voyages and Travels of a Corps of Discovery, under the Command of Captain Lewis and Captain Clarke, of the Army of the United States

Lewis and Clark's Journal to the Rocky Mountains in the Years 1804, -5, -6; As Related by Patrick Gass, One of the Officers in the Expedition

Journal of the Lewis and Clark Expedition, Reprinted From the Edition of 1811, With Facsimiles of the Original Title-page and the Five Original ... of the Lewis and Clark Route, With an Analy

Lewis and Clarke's Journal

Gass's Journal of the Lewis and Clark Expedition