"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MCKN-NPG : accessed 13 August 2018), Helen Yates in household of Thomas Yates, University Place, Lancaster, Nebraska, United States; citing ED 48, sheet 9A, line 19, family 213, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 995; FHL microfilm 1,820,995.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XC94-161 : accessed 13 August 2018), Helen Yates in household of Edith Yates, Ardenwald, Clackamas, Oregon, United States; citing enumeration district (ED) ED 3, sheet 2A, line 42, family 41, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1940; FHL microfilm 2,341,674.
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