"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MJ63-VJ9 : accessed 22 November 2016), Doctor Nichols in household of William E Nichols, Batesville, Habersham, Georgia, United States; citing enumeration district (ED) ED 86, sheet 7A, line 15, family 109, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 261; FHL microfilm 1,820,261.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:37BX-HT2 : accessed 22 November 2016), Dock Nickles in household of Earve Nickles, Batesville, Habersham, Georgia, United States; citing enumeration district (ED) ED 7, sheet 3A, line 7, family 39, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 367; FHL microfilm 2,340,102.