"Oregon Death Index, 1903-1998," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VZW6-6Q9 : 11 December 2014), Walter T K Achiu, 21 Mar 1989; from "Oregon, Death Index, 1898-2008," database and images, Ancestry (http://www.ancestry.com : 2000); citing Lane, Oregon, certificate number 89-05471, Oregon State Archives and Records Center, Salem.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JT72-G57 : 11 January 2021), Walter T Achiu, 21 Mar 1989; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).