Author
Philadelphia Transportation Company
2
ADC (Firm)
1
Franklin Survey Company,
1
Friedman, T. G.
1
H.M. Gousha Company,
1
Hartranft, Rufus C.
1
Heilprin, Angelo, 1853-1907
1
Playground Maps Inc
1
Simulation Systems Inc
1
Southeastern Pennsylvania Transportation Authority
1
Southeastern Pennsylvania Transportation Authority. Service Planning Department
1
Taylor, Frank H. 1846-1927
1
United States. Bureau of the Census
1