"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/K4HS-PYT : accessed 06 Sep 2014), Elva Stills in household of Virgil M Stills, Midway, Civil District 19, Greene, Tennessee, United States; citing enumeration district (ED) 30-28, sheet 11A, family 192, NARA digital publication of T627, roll 3896.
"Florida State Census, 1945," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MNN2-GN5 : 14 November 2014), Elva Stills, Lakeland, Polk, Florida; citing line 39, State Archives, Tallahassee; FHL microfilm 2,425,207.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/J5VB-7X3 : 20 May 2014), DELLA BLEDSOE, 11 Dec 2006; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
It may be possible to confirm family relationships with Della by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Della: