Author
United Mine Workers of America
15
Lauck, W. Jett 1879-1949
11
Pennsylvania
11
United States Anthracite Coal Commission
11
Pennsylvania Historical and Museum Commission
9
Philadelphia Record
8
Lehigh Coal and Navigation Company
7
North Pennsylvania Railroad Company
7
Pennsylvania Inspectors of Mines
7
Pennsylvania. Bureau of Topographic and Geologic Survey
6
Roberts, William F.
6
United States. Bureau of Mines
6
Aurand, Harold W.
5
Fernon, Thomas S. 1818-1896
5
Geological Survey of Pennsylvania
5
Alleghany Railroad and Coal Company
4
Ashburner, Charles A. 1854-1889
4
Lehigh Coal and Navigation Co
4
Little Schuylkill Navigation Rail Road and Coal Company
4
Pennsylvania Anthracite Coal Industry Commission
4
Pennsylvania Public Utility Commission
4
Sisler, James D. 1894-
4
Anthracite Bureau of Information (Philadelphia)
3
Arnold, Andrew Bernard
3
Beránek, Karel H.,
3
Communist Party of the United States of America Coal Commission
3
Conference on the History of Northeastern Pennsylvania Nanticoke, Pa.)
3
Conlogue, William,
3
Daddow, Samuel Harries
3
Ellsworth Collieries Company Employees' Death and Accident Association
3
Gowen, Franklin Benjamin, 1836-1889
3
Graebner, William
3
Haines, Michael R.
3
Hester, Patrick
3
Hughes, F. W. 1817-1885
3
Kanarek, Harold K.
3
Lyman, Benjamin Smith, 1835-1920
3
Mammatt, Edward
3
McHugh, Peter
3
Metheny, Karen Bescherer, 1960-
3
Nicolls, William Jasper, 1854-1916
3
Pennsylvania. Board of Commissioners for the Second Geological Survey
3
Pennsylvania. Department of Conservation and Natural Resources
3
Philadelphia and Reading Coal and Iron Company
3
Pinkowski, Edward, 1916-
3
Rupp, I. Daniel 1803-1878
3
Salay, David L., 1944-
3
Sheafer, P. W. 1819-
3
Sinclair, Upton, 1878-1968,
3
Taylor, Richard C. 1789-1851
3
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