"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X3Z7-967 : accessed 13 May 2017), Kenneth Benson in household of Judd Benson, Harmony, Fillmore, Minnesota, United States; citing enumeration district (ED) ED 16, sheet 5B, line 59, family 93, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1086; FHL microfilm 2,340,821.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KSK1-4RM : accessed 13 May 2017), Kenneth Benson in household of Judson J Benson, Harmony Township, Fillmore, Minnesota, United States; citing enumeration district (ED) 23-17, sheet 3B, line 76, family 57, 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 1921.
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