Author
Arnold, Andrew Bernard
2
Young, David W.
2
Alexander, Edwin P.
1
Diemer, Andrew K.,
1
Kapsch, Robert J.
1
Mainwaring, W. Thomas, 1952-
1
Mingus, Scott L., Sr
1
Penn
1
Reading Company
1
Smith, David G. 1964-
1
Stone, C. W.
1
Switala, William J.
1
Watkins, J. Elfreth 1852-1903
1
Wingert, Cooper H.,
1
Wooden, Sherman F.
1