"United States Census, 1930," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:X3MB-TKJ : accessed 8 March 2022), Kent Ogato in household of Clay Ogato, Sterling, Whiteside, Illinois, United States; citing enumeration district (ED) ED 35, sheet 7A, line 47, family 172, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 566; FHL microfilm 2,340,301.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:KWTM-4ZT : 8 January 2021), Kent Ogata in household of Clay K Ogata, Sterling, Whiteside, Illinois, United States; citing enumeration district (ED) 98-37B, sheet 1A, line 16, family 5, 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 906.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JYN5-VZZ : 9 January 2021), Kent Ogata, Jun 1980; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).