"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MF3B-5MN : 15 August 2017), Amos Ireland, Medway, Penobscot, Maine, United States; citing enumeration district ED 2, sheet 401B, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,485.
"United States Census, 1900," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MMLT-8HL : accessed 22 January 2021), Amos M Ireland, United States; citing enumeration district (ED) 92, sheet 4A, family 49, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,597.
"United States Census, 1910," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MR3X-4GB : accessed 22 January 2021), Amos M Ireland, Lincoln, Penobscot, Maine, United States; citing enumeration district (ED) ED 181, sheet 18B, family 368, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 544; FHL microfilm 1,374,557.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:KMMP-QK1 : 5 January 2021), Amos Ireland in household of Jennie Smith, Lincoln, Penobscot, Maine, United States; citing enumeration district (ED) 10-83, sheet 11A, line 7, family 201, 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 1487.
"Maine, Nathan Hale Cemetery Collection, ca. 1780-1980," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:QVJ5-4PTD : 14 December 2020), Amos M Ireland, 1948; citing South Lincoln, Lincoln, Penobscot, Maine, United States, South Lincoln Cemetery, Maine State Library, Augusta; FHL microfilm 1,315,428.