"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MR33-8JK : accessed 19 November 2021), Marian F Allen in household of John R Allen, Farmington, Franklin, Maine, United States; citing enumeration district (ED) ED 125, sheet 8A, family 191, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 540; FHL microfilm 1,374,553.