The adventures of a nature guide

Mills, Enos A., 1870-1922.
Garden City, New York : Doubleday, Page & Company, 1920.

America's new frontier, the Mountain West.

Garnsey, Morris E., 1906-
New York : Knopf, 1950.
[1st ed.]

Enos Mills of the Rockies

Hawthorne, Hildegarde.
Boston : Houghton Mifflin company, 1935.

Journey through the Rocky Mountains and the Humboldt Mountains to the Pacific Ocean

Schiel, J. (Jacob Heinrich Wilhelm), 1813-1889.
Norman : University of Oklahoma Press, 1959.

A lady's life in the Rocky Mountains.

Bird, Isabella L. (Isabella Lucy), 1831-1904.
Norman : University of Oklahoma Press, [1960]

On the roof of the Rockies, the great Columbia icefield of the Canadian Rockies

Freeman, Lewis R. (Lewis Ransome), 1878-1960.
New York : Dodd, Mead and company, 1925.

Report of the exploring expedition to the Rocky Mountains

Frémont, John Charles, 1813-1890.
[New York] : Readex Microprint, 1966.

The Rockies

Lavender, David, 1910-2003.
New York : Harper & Row, [1968]
[1st ed.].

Rocky Mountain Empire; revealing glimpses of the West in transition from old to new, from the pages

Garden City, N.Y. : Doubleday, [1950]
[1st ed.]

The Rocky Mountain journals of William Marshall Anderson: the West in 1834.

Anderson, William Marshall, 1807-1881.
San Marino, Calif. : Huntington Library, 1967.

The Rocky Mountains

Atwood, Wallace Walter, 1872-1949.
New York : Vanguard Press, [1945]

Wilderness kingdom, Indian life in the Rocky Mountains: 1840-1847; the journals & paintings of Nicol

Point, Nicolas, 1799-1868.
New York : Holt, Rinehart and Winston, [1967]
[1st ed.]