Walker, Kenneth (Lance, HR, Elijah, Progen), SSDI, 1990,

• Title	Walker, Kenneth (Lance, HR, Elijah, Progen), SSDI, 1990,
  Short Title	Social Security Administration, "Social Security Death Index," database, Ancestry.com (http://www.ancestry.com : accessed 29 September 2013), entry for Charles K. Walker, 26 June 1990, SS no. 492-30-6176.
  Source ID	S3876
  Linked to	Charles Kenneth Walker