Author
Geological Survey (U.S.),
31
Geological Survey (U.S.)
30
Campbell, Marius R. 1858-1940
8
Emmons, Samuel Franklin, 1841-1911
7
Hayes, C. W. 1859-1916
7
White, David, 1862-1935
6
Hill, James M. 1884-
4
Ransome, F. L. 1868-1935
4
Adams, George I. 1870-1932
3
Dale, T. Nelson 1845-1937,
3
Eckel, Edwin C. 1875-1941
3
Loughlin, G. F. 1880-1946
3
Miser, Hugh D. 1884-1969
3
Campbell, Marius R. 1858-1940,
2
Dale, T. Nelson 1845-1937
2
Gallagher, David, 1906-
2
Gannett, Henry, 1846-1914
2
Gannett, Samuel S. 1861-1939
2
Haworth, Erasmus, 1855-1932,
2
Knopf, Adolph, 1882-1966
2
Lindgren, Waldemar, 1860-1939
2
Marshall, R. B. 1867-1949
2
Prindle, L. M. 1865-1956
2
Schrader, Frank C. 1860-1944,
2
Smith, George Otis, 1871-1944
2
Sullivan, Eugene C. 1872-
2
Thom, W. T. 1891-1979
2
Umpleby, Joseph B. 1883-1967
2
White, David
2
Adams, George I. 1870-1932,
1
Arnold, Ralph, 1875-1961
1
Atwood, Wallace Walter, 1872-1949
1
Bay, Harry X., 1906-
1
Bowen, C. F. 1871-1953,
1
Bowles, Oliver, 1877-1958,
1
Bramlette, M. N. 1896-1977,
1
Burchard, Ernest F. 1875-1961,
1
Clark, Frank R. 1881-1974,
1
Clarke, Frank Wigglesworth, 1847-1931
1
Clarke, Frank Wigglesworth, 1847-1931,
1
Collier, Arthur J. 1866-1939
1
Collier, Arthur J. 1866-1939,
1
Condit, D. Dale 1886-1955
1
Condit, D. Dale 1886-1955,
1
Crane, W. R.,
1
Cross, Whitman, 1854-1949,
1
Daly, Reginald Aldworth, 1871-1957
1
Darton, Nelson Horatio, 1865-1948
1
Darton, Nelson Horatio, 1865-1948,
1
Dobbin, C. E. 1892-1967,
1
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