Range Lightkeepers: Maine Lighthouses - Doubling Point Range Lighthouses on Maine's Kennebec River: pictures and information, and a plea for preservation. Friends of the Doubling Point Lighthouse - Friends of the Doubling Point Light is a non-profit organization dedicated to the preservation of Doubling Point Lighthouse-- located on Kennebec River in Maine. Town of Arrowsic - Provides information about the town, office hours, notices, recycling efforts, and services. Squirrel Point Light - Located on Arrowsic Island, in the Kennebec River. Features history, local cruises, photographs, and a map. Doubling Point Range Lights - Located on Arrowsic Island in the Kennebec River. Features history of the lighthouse, photographs, and a map. Doubling Point Light - Located on Arrowsic Island on the Kennebec River. Features history of the lighthouse, local cruises, photographs, and a map.