"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6GB-GZP : accessed 24 April 2016), Robert Gaines in household of John W Gaines, Wilmington, Los Angeles, California, United States; citing enumeration district ED 32, sheet 374D, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0067; FHL microfilm 1,254,067.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9PK-RVJ : accessed 24 April 2016), Robert E Gains in household of John W Gains, Compton Township, Precinct 2, Los Angeles, California, United States; citing sheet 2A, family 38, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,091.
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