All text is from The Forest Society of Maine website:
In 1984 the Coburn family, who had owned much of Attean Township since 1916, faced the need to sell their land, but wanted to find a way to protect the township’s stunning natural beauty, outstanding forest resources, and recreational traditions.
FSM was established by the Society for the Protection of New Hampshire Forests to fill a unique niche and to conserve 18,067 acres in Jackman, Maine (Attean Township). The area includes important ecological areas, 15 miles of Attean Pond and Moose River shore front, scenic islands, mountain slopes, and productive forestland .
At the time, the Attean easement was the largest conservation easement in the country, and the first easement in Maine to include the multiple values — recreational, ecological, and economic — produced by Maine’s forests.