The town of Gilead was incorporated in 1804. The Atlantic and St. Lawrence Railroad from Portland to Montreal followed the south bank of the Androscoggin River and reached Gilead in 1851.
Gilead, a municipality, was founded in 1804. A railway line, the Atlantic and St. Lawrence Railroad, spanning from Portland to Montreal, traversed the Androscoggin River's southern bank and reached Gilead in 1851.