"California, Death Index, 1940-1997," index, FamilySearch (
https://familysearch.org/pal:/MM9.1.1/VP8J-9YP : accessed 17 February 2015), Erwin Ernst Godart, 25 Dec 1981; Department of Public Health Services, Sacramento.; "United States Social Security Death Index," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/JG76-JZC : accessed 17 February 2015), Erwin Godart, Dec 1981; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).