Author
Philadelphia Record
5
Philadelphia Rapid Transit Company
3
Boorse, J. W.
1
Creighton, Thomas
1
Esler, Frederic B.
1
George de Benneville Keim Memorial Collection
1
Hallowell, Guernsey A.
1
Hartwell, Edward M.
1
Jones, Clarence
1
Meyers, Allen
1
National Railway Historical Society. Philadelphia Chapter
1
Philadelphia (Pa.) Councils Law Committee
1
Philadelphia (Pa.) Urban Traffic and Transportation Board
1
Philadelphia (Pa.). Urban Traffic and Transportation Board
1
Philadelphia Rapid Transit Company Glass Plate Negative Collection
1
Simulation Systems Inc
1
Smith, Charles Morton
1
Southeastern Pennsylvania Transportation Authority
1
Southeastern Pennsylvania Transportation Authority. Service Planning Department
1
Spivak, Joel
1
Twining, William S.
1
Warwick, Charles F. 1852-1913
1
Williams, Gerry
1