Author
Pennsylvania Inspectors of Mines
6
Lehigh Coal and Navigation Company
5
Roberts, William F.
5
Alleghany Railroad and Coal Company
4
Pennsylvania Historical and Museum Commission
4
Arnold, Andrew Bernard
3
Ashburner, Charles A. 1854-1889
3
Daddow, Samuel Harries
3
Graebner, William
3
Little Schuylkill Navigation Rail Road and Coal Company
3
Pennsylvania
3
Philadelphia Record
3
Sheafer, P. W. 1819-
3
Taylor, Richard C. 1789-1851
3
United States. Bureau of Mines
3
Aurand, Harold W.
2
Baker, Ralph Hillis, 1910-
2
Bannan, Benjamin
2
Beránek, Karel H.,
2
Eavenson, Howard N.
2
Ellsworth Collieries Company Employees' Death and Accident Association
2
Ely, John
2
Ingham, Charles F.
2
Kulp, Geo. B. 1839-1915
2
Lehigh Coal and Navigation Co
2
Lesley, John Peter, 1819-1903
2
Long, Michael E.
2
Markham, Edwin, 1852-1940
2
Maxwell, Volney L., 1804-1873
2
Maxwell, Volney Lee, 1804-1873
2
Metheny, Karen Bescherer, 1960-
2
Mill Creek Coal Co
2
O'Brien, Michael
2
Pennsylvania Anthracite Coal Industry Commission
2
Pennsylvania Commission Appointed to Investigate the Bituminous Coal Mines
2
Pennsylvania. Board of Commissioners for the Second Geological Survey
2
Pennsylvania. Bureau of Topographic and Geologic Survey
2
Pennsylvania. General Assembly. Senate. Committee on the Judiciary
2
Sinclair, Upton, 1878-1968,
2
Sisler, James D.
2
Swank, James Moore, 1832-1914
2
Thompson, Heber Samuel, 1840-1911
2
United States. Coal Commission
2
Wallace, Anthony F. C., 1923-
2
Wyoming Historical and Geological Society
2
AP Wide World Photos
1
Alleghany Railroad and Coal Co
1
American Academy of Political and Social Science
1
American Liberty League National lawyers committee
1
Anthracite Heritage Museum and Iron Furnaces Associates
1
more ...