Author
Lancaster and Schuylkill Bridge Company
2
Unknown author
2
Harrisburg Bridge Company
1
Kneass family
1
Penrose Ferry Bridge Company
1
Philadelphia and Camden Bridge and Terminal Company
1
Powers, Frederick Perry d. 1927
1
Schuylkill Permanent Bridge (Philadelphia, Pa.)
1
Schuylkill Permanent Bridge Companyhia
1
Susquehanna Permanent Bridge Company
1
Vauclain, Samuel M. (Samuel Matthews) 1856-1940
1
Wallace, Philip B.
1
Wills, Henry W.
1