↑ "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M4JQ-F9N : 19 February 2021), Elias C Brock, Oxford, Calhoun, Alabama, United States; citing enumeration district ED 14, sheet 710B, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,005.
↑ "United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MK35-8CM : accessed 29 October 2021), Elias C Brock in household of William B Ferguson, Alexandria, Calhoun, Alabama, United States; citing enumeration district (ED) ED 4, sheet 6B, family 108, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 4; FHL microfilm 1,374,017.