"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MFQ4-9ZW : 14 July 2016), John N Ingalls in household of Nelson Ingalls, East Machias, Washington, Maine, United States; citing enumeration district ED 184, sheet 301A, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0490; FHL microfilm 1,254,490.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MMG3-V2N : accessed 30 April 2017), John N Ingaels, East Machias town, Washington, Maine, United States; citing enumeration district (ED) 205, sheet 1A, family 10, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,601.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MR3K-4LM : accessed 30 April 2017), John N Ingalls, East Machias, Washington, Maine, United States; citing enumeration district (ED) ED 284, sheet 13A, family 281, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 547; FHL microfilm 1,374,560.