"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MG6T-VQ9 : accessed 5 September 2022), Della Sisk in household of George W Sisk, Civil District 16, Franklin, Tennessee, United States; citing enumeration district (ED) ED 30, sheet 11A, family 199, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1499; FHL microfilm 1,375,512.
"Alabama County Marriages, 1809-1950," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QKZ9-2XPK : 19 February 2021), Doc Bishop and Della Sisk, 07 Mar 1919; citing Jackson, Alabama, United States, County Probate Courts, Alabama; FHL microfilm 1,029,809.
"United States Census, 1930," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:3N46-RMM : accessed 5 September 2022), Della I Bishop, Election Precinct 18 Collins, Jackson, Alabama, United States; citing enumeration district (ED) ED 22, sheet , line , family , NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll ; FHL microfilm .
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:V1GV-KTT): accessed 5 September 2022, Alabama > Jackson > Election Precinct 18, Grays Chapel > 36-22 Election Precinct 18 Collins, Grays Chapel > image 5 of 17; citing Sixteenth Census of the United States, 1940, NARA digital publication T627.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V347-RWB : 9 January 2021), Della Bishop, Dec 1986; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).