The Two Great Canyons: Excerpts From Letters Written on a Western Journey

Jackson, William Henry, 1843-1942 [Photographer]; Geological Survey (U.S.)

Chittenden, Hiram Martin, 1858-1917

Kephart, Horace, 1862-1931 [Editor]; Powell, John Wesley, 1834-1902

Gillis, Charles J.

White, James, 1837-1927 [Contributor]; Hawkins, William W., -1919 [Contributor]; Bass, William Wallace, 1848-1933

Hovey, Edmund Otis, 1862-1924 [Photographer]; Vries, Hugo de, 1848-1935

Hough, Emerson, 1857-1923

White, Alma, 1862-

Hedin, Sven Anders, 1865-1952

Beal, Merrill D., 1898-1990

Dellenbaugh, Frederick Samuel, 1853-1935