Penobscot County Baxter State Park Maine Forest Service
1919: "An alidade and range finder was installed at Horse Mountain and we have found them a great help in locating fires. It is a far better method than the old one." "June 18th the lookout and patrolman built on a bedroom on the Horse Mountain cabin, 9 x 12 feet, which was very much needed. The watchman gave the tower house two coats of paint inside and out."(Forest Protection and Conservation in Maine, 1919)
1920: Inventory indicates a 12-foot steel tower.
August 17, 1989: "The first of what are to become annual community improvement projects by the Wheelabrator Environmental Systems Co. recently resulted in the restoration of a Maine Forest Service fire tower on Horse Mountain in Baxter State Park in Township 6, Range 8. A six-man volunteer crew was flown to the mountain Saturday, July 22, in a Maine Forest Service helicopter. The men, all employees of the company, spent eight hours at the mountain installing new windows, putting on a new roof, installing a new floor and painting the steel tower and woodwork at the tower. The tower, together with another tower on Burnt Mountain in Township 5, Range 10, have been targeted by the Baxter Park Authority for restoration and a return to service as part of the park's volunteer program." (Bangor Daily News)
1999: The Baxter State Park Authority had the tower removed.