Author
- Philadelphia Transportation Company 2 results
- Southeastern Pennsylvania Transportation Authority 2 results
- ADC (Firm) 1 results
- Franklin Survey Company, 1 results
- Hartranft, Rufus C. (Rufus Clinton) 1 results
- Heilprin, Angelo, 1853-1907 1 results
- Simulation Systems Inc 1 results
- Taylor, Frank H. (Frank Hamilton), 1846-1927 1 results
- United States. Bureau of the Census 1 results