Benson W. Rohrbeck

• Altoona's trolleys
• Beaver County trolleys
• Cambria's trolleys
• Chambersburg's trolleys
• Conneaut and Erie Traction Co
• Erie's trolleys
• Hazleton's trolleys
• Hershey transit
• Johnstown Traction Co., 1882-1960
• Lehigh Valley Transit Co
• Northumberland County trolleys
• Pennsylvania trolley photo album