Calais Street Railway
Somerset Traction Company
Bangor Railway and Electric Company
Biddeford and Saco Railroad
Benton and Fairfield Railroad
Portland and Brunswick Street Railway
Fryeburg Horse Railroad
Androscoggin Electric Company
Lewiston, Augusta and Waterville Street Railway
Oxford Electric Company
Aroostook Valley Railroad
Cumberland County Power and Light
Rockland and South Thomaston and Owl's Head Street Railway
Waterville and Fairfield Railway
Rockland, Thomaston and Camden Street Railway
Atlantic Shore Line Railroad
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