"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MD6Y-JP4 : accessed 13 November 2015), Eugene Watson in household of Nathan G Watson, 5th Ward, Lincoln, Louisiana, United States; citing enumeration district 38, sheet 4D, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0456; FHL microfilm 1,254,456.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MS5Y-QXB : accessed 14 November 2015), Eugene J Watson, Ward 6, Ouachita, Louisiana, United States; citing sheet 14A, family 267, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,576.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MPY5-PHK : accessed 14 November 2015), Eugene Watson, Police Jury Ward 6, Ouachita, Louisiana, United States; citing enumeration district (ED) ED 108, sheet 18B, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,374,538.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VYR7-ZB8 : accessed 14 November 2015), Eugene J Watson, Oakdale, Police Jury Ward 5, Allen, Louisiana, United States; citing enumeration district (ED) 2-10, sheet 7B, family 154, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 1379.