↑ "Maine Vital Records, 1670-1921," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q24F-RJL2 : 2 March 2021), True C Foss and Ruth S Smith, 24 Jun 1908; citing Portland, Cumberland, Maine, United States, multiple sources, Maine; FHL microfilm.
↑ "United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MR3S-2BG : accessed 15 August 2022), Ruth I Foss in household of True C Foss, Portland Ward 9, Cumberland, Maine, United States; citing enumeration district (ED) ED 100, sheet 16A, family 340, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 539; FHL microfilm 1,374,552.
↑ "United States Census, 1930," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:XM8P-H1K : accessed 15 August 2022), Ruth S Foss in household of True E Foss, Portland, Cumberland, Maine, United States; citing enumeration district (ED) ED 68, sheet 10A, line 45, family 239, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 831; FHL microfilm 2,340,566.