O. R. Cummings

• Manchester Streetcars (NH)
• York County Trolleys
• Illustrated Atlas of Maine's Street and Electric Railways
• Manchester Streetcars
• Portsmouth Electric Railway
• Street cars of Boston
• The Shore Line Electric Railway
• The Shore Line Electric Railway Company
• Trolleys along the turnpike
• Trolleys in the land of the Pilgrims
• York County, Trolleys