Author
Philadelphia Record
2
Boorse, J. W.
1
Creighton, Thomas
1
George de Benneville Keim Memorial Collection
1
Hallowell, Guernsey A.
1
Meyers, Allen
1
National Railway Historical Society. Philadelphia Chapter
1
Philadelphia (Pa.) Urban Traffic and Transportation Board
1
Philadelphia (Pa.). Urban Traffic and Transportation Board
1
Philadelphia Rapid Transit Company
1
Philadelphia Rapid Transit Company Glass Plate Negative Collection
1
Smith, Charles Morton
1
Spivak, Joel
1
Twining, William S.
1
Williams, Gerry
1