Author
Geological Survey (U.S.)
41
Nickles, John M. 1859-1945
25
Geological Survey (U.S.),
22
Weeks, Fred Boughton, 1864-1942
15
Thom, Emma Mertins
9
Geological Society of America
7
Darton, Nelson Horatio, 1865-1948
6
King, Ruth Reece
5
Warman, Philip Creveling, 1859-1908
5
Clarke, Frank Wigglesworth, 1847-1931
4
Dale, T. Nelson 1845-1937
4
Darton, Nelson Horatio, 1865-1948,
4
Gannett, Henry, 1846-1914
4
Perrine, Charles D., 1867-1951
4
American Association of Petroleum Geologists
3
Geological Survey of Canada
3
Wheeler, J. O.
3
Anderson, Roger Y. 1927-
2
Bagg, Rufus M., 1869-
2
Bally, Albert W., 1925-2019
2
Decade of North American Geology Project
2
Eckel, Edwin C. 1875-1941
2
Gannett, Samuel S. 1861-1939
2
Garrity, Christopher P.
2
Hildebrand, R. S.
2
Hooker, Marjorie, 1908-
2
Instituto Geológico de México
2
Kemp, James Furman, 1859-1926
2
King, Philip B., 1903-1987
2
Kopf, Rudolph W. 1922-
2
Leith, C. K. 1875-1956
2
Lyell, Charles, Sir, 1797-1875
2
Marcou, Jules, 1824-1898
2
Nickles, John M. 1859-1945,
2
Ransome, F. L. 1868-1935
2
Reed, John Calvin, Jr., 1930-
2
Roberts, Albert Eugene, 1921-
2
Russell, Israel C. 1852-1906
2
Sando, William Jasper
2
Schuchert, Charles, 1858-1942
2
Scudder, Samuel Hubbard, 1837-1911
2
Soller, D. R.
2
Spurr, Josiah Edward, 1870-1950
2
Van Hise, Charles Richard, 1857-1918
2
Van Hise, Charles Richard, 1857-1918,
2
Willis, Bailey, 1857-1949
2
Wilson, Druid
2
Adams, George I. 1870-1932
1
Alden, William C. 1871-1959
1
Baker, Marcus, 1849-1903
1
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