- Cărți electroniceBessemer and Lake Erie RailroadKenneth C. Springirth
- Cărți electroniceNorthwestern Pennsylvania RailroadsKenneth C. Springirth
- Cărți electronicePittsburgh Streamlined TrolleysKenneth C. Springirth
- Cărți electroniceSuburban Philadelphia TrolleysKenneth C. Springirth
- Cărți electroniceEast Broad Top RailroadKenneth C. Springirth
- Cărți electroniceJohnstown Trolleys and InclineKenneth C. Springirth
- Cărți electroniceArcade and Attica RailroadKenneth C. Springirth
- Cărți electroniceSoutheastern Pennsylvania TrolleysKenneth C. Springirth
- Cărți electroniceGreater Erie TrolleysKenneth C. Springirth