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- [S1660] Maine, Cumberland County, 1860 U.S. census, Ancestry.com, Digital images, (https://www.ancestry.com: National Archives and Records Administration, 2004), M653, roll M653_436, Westbrook, p. 14, dwelling 110, family 105, George F Leighton, accessed 30 Aug 2011
- [S1642] Perley M. Leighton, A Leighton Genealogy, Decendants of Thomas Leighton of Dover, New Hampshire, 2, (Boston, Massachusetts: New England Historic Genealogical Society, 1989.), 1: 286.
- [S1075] "Find a Grave Memorials." Database and images., (Find a Grave. https://www.findagrave.com : 2019.), (https://www.findagrave.com : accessed 18 Dec 2017); Hattie Francis Leighton (1856-1862) Memorial #118625298; citing Evergreen Cemetery, Portland, Maine.
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