Author
Geological Survey (U.S.),
2
Osborn, Henry Fairfield, 1857-1935
2
Belden, A. W., 1876-1920
1
Burrows, John S. 1911-
1
Darton, Nelson Horatio, 1865-1948
1
Geological Survey (U.S.)
1
Gilpin, J. Elliott, 1866-1924
1
Goss, W. F. M. 1859-1928
1
Graham, Alan, 1934-
1
Humphrey, Richard Lewis, 1869-1928
1
Matthew, William Diller, 1871-1930
1
Matthew, William Diller, 1871-1930,
1
Osborn, Henry Fairfield, 1857-1935,
1
Randall, Dwight T.
1
Ray, Walter T.
1
Richardson, G. B. 1872-1949
1
Watteyne, Victor
1
White, Charles A. 1826-1910,
1