Big Lake Plantation, Washington County, Maine Genealogy
Big Lake (also known as Number 21 ED Township, and also Plantation 21) is a former plantation, now an unorganized territory (township) in the North Washington townships of Washington County, Maine. Big Lake Plantation was organized from Township 3 R1 and Number 21 ED Township about 1841 (report undated). That organization ended in 1860. It was apparently renewed briefly and discontinued again in 1893 under the name Hinkley Plantation. 
- "Big Lake Plantation" search in the "Maine Towns Legal Histories dates of incorporation, name and boundaries changes" section of Maine Archive Interactive (accessed 10 June 2013).
- Maine Historical Records Survey Project, Division of Professional and Service Projects, Work Projects Administration, Counties, Cities, Towns, and Plantations of Maine: a Handbook of Incorporations, Dissolutions, and Boundary Changes (Portland, Maine: The Survey, 1940), 68 (digital p. 77). A digital version is available via a link in the FamilySearch Catalog.