Author
North Pennsylvania Railroad Company
5
Cox, Harold E.
2
Duffy, Edward W., 1947-
2
Kennedy, David Johnson, 1816-1898,
2
Meyers, Allen
2
Philadelphia
2
Bernhart, Benjamin L.,
1
Bernhart, John H. L. Dr.,
1
Bernhart, John L. Dr.,
1
Blankenburg, Rudolph, 1843-1918
1
Brown, Andrew S.
1
Cary, Lorene
1
Chandler Brothers & Co
1
Diemer, Andrew K.,
1
DuPuis, Roger, II,
1
Elliott, Isaac
1
Fernon, Thomas S. 1818-1896
1
Harwood, Herbert H., Jr
1
J.G. Brill Company
1
Julia Max Designs
1
King, Clyde L. 1879-1937
1
Mansfield, Edward Deering, 1801-1880
1
Meyers, John F.
1
Nathans, Carl
1
National Railway Historical Society. Philadelphia Chapter
1
Pennsylvania Railroad Technical & Historical Society. Philadelphia Chapter
1
Philadelphia (Pa.) Dept. of Public Works
1
Philadelphia (Pa.). Councils
1
Philadelphia Dept. of City Transit
1
Philadelphia Rapid Transit Company
1
Simulation Systems Inc
1
Southeastern Pennsylvania Transportation Authority
1
Southeastern Pennsylvania Transportation Authority. Service Planning Department
1
Spivak, Joel
1
Springirth, Kenneth C.
1
Toland, Robert
1
Tyson, Job R. 1803-1858
1
Wharton, Thomas I. 1791-1856
1