From collection Place
Flagstaff Township (T4 R4 BKP WKR) lies within the Northwest Somerset unorganized township. "Flagstaff is a ghost town and former plantation in Somerset County, Maine, United States, near the existing town of Eustis and approximately 20 miles north of Rangeley.
"Benedict Arnold camped here on his Quebec expedition and erected a flagstaff, hence the name.
"The town was abandoned and dismantled (and legally disincorporated) in 1950 to allow construction of a hydroelectric dam on the Dead River, which enlarged Flagstaff Lake and submerged the site of the settlement" ("Flagstaff, Maine" at Wikipedia: The Free Dictionary [ https://en.wikipedia.org/wiki/Flagstaff,_Maine : accessed 16 October 2025]).
