Author
Geological Survey (U.S.)
3
Geological Survey (U.S.),
3
Miser, Hugh D. 1884-1969
3
Diller, J. S. 1850-1928
2
Evans, James George, 1938-
2
Ross, Clarence S. 1880-1975
2
Arkansas Geological Survey
1
Darton, Nelson Horatio, 1865-1948
1
Diller, J. S. 1850-1928,
1
Gale, Hoyt S. 1876-1952
1
Hance, James H.
1
Hewett, D. F. 1881-1971
1
Hill, Robert Thomas, 1858-1941
1
Hills, Francis Allan
1
Keith, Terry E. C.
1
Keith, Terry E. C.,
1
Penrose, R. A. F.
1
Phalen, W. C. 1877-1949
1
Richards, R. W. 1879-
1
Smith, Eugene Allen, 1841-1927
1
Upham, Warren, 1850-1934
1
Williams, Henry Shaler, 1847-1918
1
Willis, Bailey, 1857-1949
1