Author
Pennsylvania. Bureau of Topographic and Geologic Survey
5
Geological Survey (U.S.)
3
Stose, George Willis, 1869-1960
3
Ashley, Geo. H. 1866-1951
2
Butts, Charles, 1863-1946
2
Casey, W. R.
2
Clemson, Thomas Green, 1807-1888
2
Darlington Cannel Coal Railroad Co
2
Hall, James, 1811-1878
2
Henfrey, Benjamin
2
M'Intyre, Arch'd 1772-1858
2
Robertson, Archibald, Philadelphia
2
Stone, Ralph W. 1876-1964
2
Willard, Bradford, 1894-
2
Barnes, John Henry, 1946-
1
Bascom, F. 1862-1945
1
Blackmer, Gale C.
1
Brown, Amos P. 1864-1917
1
Conference on the History of Northeastern Pennsylvania Nanticoke, Pa.)
1
Diffenderffer, Frank Reid
1
Ehrenfeld, Frederick, 1872-1940
1
Geological Society of Pennsylvania
1
Geological Society of Pennsylvania (Philadelphia)
1
Grubb, Alfred Bates
1
Grubb, Clement Bates
1
Harvey, Isaac A.
1
Hensel, William Uhler
1
Hice, Richard R, 1865-
1
Hoffman, John N.
1
Hudson Coal Company
1
Jonas, Anna Isabel, 1881-
1
Lancaster County Historical Society
1
Landis, David Bachman, 1862-
1
Lehigh Coal and Navigation Co
1
Livingston, J. B.
1
Luzerne County Community College Social Science History Department
1
McKean and Elk Land and Improvement Company
1
Miller, Benjamin Le Roy, 1874-1944
1
Moyer, Forrest Theodore, 1906-
1
Otte, Mary E.
1
Pennsylvania Geological Survey
1
Pennsylvania Land and Marble Co. (Cedar Grove, Pa.)
1
Pennsylvania State College. School of Mineral Industries
1
Pennsylvania. Court of Common Pleas (Lancaster County)
1
Pennsylvania. Department of Internal Affairs. Bureau of Statistics
1
Price, John W., Sr
1
Rogers, Henry D. 1808-1866
1
Rothwell, Richard Pennefather, 1836-1901
1
Sevon, W. D.
1
Smith, Robert Charles, 1945-
1
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