Ambrose’s Crazy Horse and Custer (1996) explores the remarkable parallels between the Sioux chief, Crazy Horse, and the U.S. General, William Custer, who confronted one another in a lethal battle in 1876.

Published in 1992, Erika Funkhouser’s Sureshot and Other Poems features her extended poem, "Bird Woman," where she attempts to delve into the life of Sacagawea.

Trail: The Story of the Lewis and Clark Expedition (1989) by Louis Charbonneau offers a fictionalized narrative of the historic journey.

Zebulon Pike's The Expeditions of Zebulon Pike (1987) recounts a significant western exploration in the American Southwest, occurring around the same period as the Lewis and Clark expedition.

Donna J. Kessler's The Making of Sacagawea: A Euro-American Legend (1996) examines the development of Sacagawea's legendary status.