Author
Arnold, Andrew Bernard
2
North Pennsylvania Railroad Company
2
Philadelphia & Reading Railroad Co
2
Solomon, Brian, 1966-
2
Taber, Thomas T., III
2
United States. Department of the Interior. Southwestern Pennsylvania Heritage Preservation Commission
2
Alexander, Edwin P.
1
America's Industrial Heritage Project
1
Andrews, Clinton T.
1
Archer, Robert F.
1
Bezilla, Michael,
1
Brown, R. W.
1
Brown, Revelle Wilson
1
Brown, Revelle Wilson, 1883-
1
Bucklew, Charles Rollins, 1821-1899
1
Casler, Walter C.
1
Clarke, W. T.,
1
DeGraw, Ronald, 1942-
1
Fernon, Thomas S.
1
Haupt, Herman, 1817-1905
1
Jones, James
1
Kapsch, Robert J.
1
Kline, Benjamin F. G.
1
Kulp, Randolph L.,
1
Littell, Harry,
1
Matthew, J. Cecil
1
National Railway Historical Society. Lehigh Valley Chapter
1
North Pennsylvania Railroad Co
1
Ostman, Ronald Elroy,
1
Penn
1
Pennsylvania
1
Pennsylvania Historical Association
1
Pennsylvania Railroad
1
Pennsylvania Railroad,
1
Pennsylvania. Board of Canal Commissioners
1
Pennsylvania. Board of Canal Commissioners,
1
Penrose, Charles Bingham, 1798-1857
1
Philadelphia and Reading Railroad Co
1
Saylor, Roger B. 1917-
1
Shomper, Harold E.
1
Smedley, R. C. 1832-1883
1
Springirth, Kenneth C.
1
Sprout, Oliver S.
1
Stone, C. W.
1
Tatnall, F. G., Jr
1
Treese, Lorett, 1952-
1
United States. National Park Service
1
United States. National Park Service. Denver Service Center
1
Wakefield, Manville B.
1
Watkins, J. Elfreth 1852-1903
1
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