| Sources |
- [S1936] California, Contra Costa County, FCR: Contra Costa Co., CA 1940, (http://www.ancestry.com: National Archives and Records Administration, 2012), T627, roll 198, Richmond, enumeration district (ED) 7-67, sheet 5A, p. 1133, household 141, Richard K. Nelson, accessed 5 Jun 2016 (Reliability: 3).
- [S1937] California, Los Angeles County, FCR: Los Angeles Co., CA 1930, (http//www.ancestry.com: National Archives and Records Administration, 2002), T625, roll 172, San Antonio, enumeration district (ED) 1367, sheet 13B, p. 149, dwelling 388, family 390, Richard K. Wilson, accessed 5 Jun 2016 (Reliability: 3).
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