William T. Davis household, 1900 U.S. Census, James County, Tennessee, Population Schedule, Enumeration District [ED] 74, Supervisor's District [SD] 3, Sheet 8A, Dwelling 124, Family 124, National Archives.
W. T. Davis household, 1910 U.S. Census, Hamilton County, Tennessee, Population Schedule, Civil District 3, Enumeration District [ED] 78, Supervisor's District [SD] 3, Sheet 13A, Dwelling 220, Family 220, National Archives.
Tillman Roberts household, 1930 U.S. Census, Hamilton County, Tennessee, Population Schedule, city of Chattanooga, Enumeration District [ED] 33-64, Supervisor's District [SD] 13, Sheet 15B, Dwelling 276, Family 307, National Archives.
Ancestry.com. U.S., Social Security Death Index, 1935-2014 [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2014 (accessed 02 Sep 2019), entry for Alma D. Roberts, Number: 413-82-7179; Issue State: Tennessee; Issue Date: 1965.
Find A Grave, database and images (https://www.findagrave.com: accessed 02 September 2019), memorial page for Alma D Roberts (1894–1968), Find A Grave Memorial no. 119586053, citing Chattanooga Memorial Park, Chattanooga, Hamilton County, Tennessee, USA; Maintained by Danelia (contributor 47302288).
Alma Davis Roberts obituary, "Chattanooga Times", Chattanooga, Hamilton County, Tennessee, 31 May 1968, Page 17, Column 8.
It may be possible to confirm family relationships with Alma by comparing test results with other carriers of her ancestors' mitochondrial DNA.
Mitochondrial DNA test-takers in the direct maternal line: