| Sources |
- [S2216] WWII Draft Registration Cards, 1940-1947 ['Young Men's Registration'], (Ancestry.com. http://www.ancestry.com : 2011.), (http://www.ancestry.com : accessed 20 Jan 2025), card for Clarence Delmer Chappell, serial no. T1058; Local Board No. 75, Louisville, Jefferson County, Kentucky. (Reliability: 3).
- [S1652] Social Security Administration, SSDI, (Ancestry.com (http://www.ancestry.com : 2011)), entry for Clarence Pyle, 1971, SS no. 404-14-3237, accessed 20 Jan 2025 (Reliability: 3).
- [S2327] Kentucky. Louisville., The Courier-Journal & Times (Louisville, KY), Associated Press and Staff Dispatches, "Former Louisvillian dies in collision of light aircraft and Air Force jet," 26 Sep 1971, p. B8, col. 2; digital images, Newspapers.com (http://www.newspapers.com : accessed 20 Jan 2025). (Reliability: 3).
- [S2322] Tennessee State Library and Archives, Tennessee, U.S., Marriage Records, 1780-2002, ((http://www.ancestry.com : 2008)), accessed 20 Jan 2025), Chappell-Collins, 1940, Claiborne County; (1937-1941):112. (Reliability: 3).
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