The Monson and Athens Railroad built south from Monson, while the Sebasticook and Moosehead built north along the Sebasticook River from the Maine Central at Pittsfield.

Track was completed from Pittsfield to Hartland in 1886, but the Monson end of the line stopped at a connection with the Bangor and Aroostook Railroad.

Plans to include the Sebasticook and Moosehead as part of Wiscasset's route to Quebec were thwarted by inability to negotiate a crossing of the Maine Central line.

[2] The Sebasticook and Moosehead had been extended as far as Mainstream by 1901 as an independent railroad receiving a share of revenues from traffic transferred to the Maine Central at Pittsfield.

As part of the New England transportation monopoly organized by the New York, New Haven and Hartford Railroad, Maine Central leased the Sebasticook and Moosehead in 1910, purchased the company in 1911, and extended the line to Harmony in 1912.

#3, Rhode Island Locomotive Works 4-4-0 Built 1889 as Upper Coos & Hereford Railroad #4.