"United States Census, 1880," index and images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8P3-HS7 : accessed 22 May 2015), Robert C Casteel in household of Jonah Casteel, Gum Log, Union, Georgia, United States; citing enumeration district 180, sheet 154A, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0169; FHL microfilm 1,254,169.