Across the wide Missouri

De Voto, Bernard, 1897-1955.
Boston : Houghton Mifflin Co., 1947.

American leviathan : empire, nation, and revolutionary frontier

Griffin, Patrick, 1965-
New York : Hill and Wang, 2007.
1st ed.

Atlas accompanying the original journals of the Lewis and Clark Expedition, 1804-1806

New York : Dodd, Mead & Co., 1905.

Citizen explorer : the life of Zebulon Pike

Orsi, Jared, 1970-
Oxford ; New York : Oxford University Press, 2013.

The Far Western frontier, 1830-1860

Billington, Ray Allen, 1903-1981.
New York : Harper & Row, 1962.
1st Harper torchbook ed.

History of the expedition under the command of Captains Lewis and Clark.

New York : SNOVA, 2021.

History of the expedition under the command of Captains Lewis and Clark.

New York : SNOVA, 2021.

New governments west of the Alleghenies before 1780.

Alden, George Henry, 1866-
[New York] : Arno Press, [1971]

The plains across : the overland emigrants and the trans-Mississippi West, 1840-60

Unruh, John David, 1937-1976.
Urbana : University of Illinois Press, [1979]

The plains across : the overland emigrants and the trans-Mississippi West, 1840-60

Unruh, John David, 1937-1976.
Urbana : University of Illinois Press, 1993.
1st unabridged pbk. ed.

Securing the West : politics, public lands, and the fate of the old republic, 1785-1850

Van Atta, John Robert, author.
Baltimore : The Johns Hopkins University Press, [2014]

Three western narratives

Irving, Washington, 1783-1859.
New York : Library of America : Distributed in the US by Penguin Putnam, [2004]

The trans-Mississippi West, 1803-1853; a history of its acquisition and settlement

Goodwin, Cardinal, 1880-1944.
New York : Russell & Russell, [1967]