"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3YQ-QPV : accessed 13 June 2021), Lucius B Holton in household of Frederick Holton, Lancaster Town (northeast part), Coos, New Hampshire, United States; citing enumeration district (ED) 266, sheet 13A, family 280, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,945.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLZS-FSD : accessed 13 June 2021), Lucius B Holton in household of Fredrick Holton, Lancaster, Coos, New Hampshire, United States; citing enumeration district (ED) ED 65, sheet 1A, family 1, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 861; FHL microfilm 1,374,874.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X7NC-R8C : accessed 13 June 2021), Lucius B Holton, Lancaster, Coos, New Hampshire, United States; citing enumeration district (ED) ED 35, sheet 19B, line 72, family 320, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1300; FHL microfilm 2,341,035.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:VTMY-9WY : 4 January 2021), Lucius B Holton in household of Sallie R Holton, Lancaster, Coos, New Hampshire, United States; citing enumeration district (ED) 4-49, sheet 9A, line 4, family 166, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 2285.