From FamilySearch Wiki
Dearborn is an extinct town, now split among the towns of Rome, Belgrade, and Oakland in Kennebec County, and the towns of Fairfield, Smithfield, and Mercer in Somerset County. The town of Dearborn was formed from the West Pond Plantation in 1812, but that town status was surrendered in 1841. In 1843 Dearborn was annexed to Waterville, Maine.
- Mabel R. Whiting, and Georgiana Hewins Lilly, Records of Dearborn Maine (Winthrop, Me.: Daughters of the American Revolution, Patience Stanley Chapter, D.A.R., 1937). At the Maine State Library.