Could one of these be him? It's the same city he died in.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MH4C-XM5 : accessed 13 August 2018), L T Yates in household of W G Campbell, Dent, San Joaquin, California, United States; citing ED 141, sheet 5B, line 60, family 105, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 143; FHL microfilm 1,820,143.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XCND-DM2 : accessed 13 August 2018), Lewis T Yates in household of Michael P Shaughnessy, Stockton, San Joaquin, California, United States; citing enumeration district (ED) ED 64, sheet 12B, line 76, family 337, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 211; FHL microfilm 2,339,946.
This is the wife and son of the guy in the 1920 census.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XCNX-8HF : accessed 13 August 2018), Alta L Yates, Stockton, San Joaquin, California, United States; citing enumeration district (ED) ED 65, sheet 22A, line 31, family 262, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 211; FHL microfilm 2,339,946.
Louis was born about 1894. He is the son of Thomas Yates and Edith Loder.
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