"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MF3P-WJN : 19 February 2021), Ellen A Dunn in household of Sewell Spaulding, Belgrade, Kennebec, Maine, United States; citing enumeration district ED 86, sheet 126C, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,481.
"Massachusetts, Town Clerk, Vital and Town Records, 1626-2001," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:FC9S-6VC : 10 November 2020), Ellen A. Dunn in entry for Frank P. Spaulding, 4 Jan 1890; citing Marriage, Cambridge, Middlesex, Massachusetts, United States, Massachusetts Secretary of the Commonwealth, Boston; FHL microfilm 004281884.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9RB-7X8 : accessed 18 May 2021), Ellen A Spaulding in household of Frank P Spaulding, Cambridge city Ward 2, Middlesex, Massachusetts, United States; citing enumeration district (ED) 695, sheet 1B, family 16, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,656.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MR37-15N : accessed 18 May 2021), Ellen A Spaulding in household of Frank P Spaulding, Belgrade, Kennebec, Maine, United States; citing enumeration district (ED) ED 94, sheet 5B, family 123, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 541; FHL microfilm 1,374,554.