↑ "United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JTT4-B35 : 20 May 2014), Earl C Como, 10 Nov 1996; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MVSS-M8H : accessed 2 October 2020), Calvin E Como in household of Earl J Como, Ogdensburg Ward 2, Saint Lawrence, New York, United States; citing ED 155, sheet 11A, line 46, family 212, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1260; FHL microfilm 1,821,260.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KQPV-VJP : 18 December 2019), Earl Como in household of Elizabeth Como, Ward 2, Ogdensburg, Ogdensburg City, St. Lawrence, New York, United States; citing enumeration district (ED) 45-76B, sheet 1A, line 24, family 6, 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 2770.