Greater Erie TrolleysKenneth C. Springirth
Kenneth C. Springirth
- Vorming
Autori Kenneth C. Springirth raamatud
- Johnstown Trolleys and InclineKenneth C. Springirth
- East Broad Top RailroadKenneth C. Springirth
- Pittsburgh Streamlined TrolleysKenneth C. Springirth
- Northwestern Pennsylvania RailroadsKenneth C. Springirth
- Suburban Philadelphia TrolleysKenneth C. Springirth
- Bessemer and Lake Erie RailroadKenneth C. Springirth
- Arcade and Attica RailroadKenneth C. Springirth
- Southeastern Pennsylvania TrolleysKenneth C. Springirth
