Author
- J.G. Brill Company 3 results
- Philadelphia Record 3 results
- Brill (J. G.) Company, Philadelphia 2 results
- Cox, Harold E. 2 results
- Cox, Harold E., 2 results
- Springirth, Kenneth C. 2 results
- American Transit Accountants' Association 1 results
- American street and interurban accountants' association 1 results
- Baldwin Locomotive Works 1 results
- Blankenburg, Rudolph, 1843-1918 1 results
- Bowman, Stanley F., 1 results
- Bucks County Electric Railway Company 1 results
- Camden and Trenton Railway 1 results
- Central Electric Railfans' Association 1 results
- Central Railfans' Association 1 results
- DeGraw, Ronald, 1942-2006, 1 results
- Denney, John Dewitt, Jr 1 results
- East Troy Electric Railroad Museum (Wis.) 1 results
- Hamilton Library and Historical Association of Cumberland County, Carlisle, Pa 1 results
- King, Clyde L. (Clyde Lyndon), 1879-1937 1 results
- King, LeRoy O. 1 results
- Lentz, Harry David 1 results
- Lentz, Harry David, 1889- 1 results
- Lind, Alan R. 1 results
- Merriken, John E. 1 results
- Pennsylvania. Bureau of Railways 1 results
- Pennsylvania. Department of Internal Affairs. Bureau of Statistics 1 results
- Philadelphia (Pa.) Dept. of Public Works 1 results
- Sebree, G. Mac (George Mac), 1932-2010, 1 results
- Siebert, C. L. 1 results
- Springirth, Kenneth C., 1 results
- Stern & Silverman (Philadelphia) 1 results
- Steuart, W. M. 1 results
- United States. Bureau of the Census 1 results