"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VB9J-V5T : 28 February 2020), Clarence Silva in household of Clarence Silva, Tract 42, Ewa Judicial District, Representative District 5, Honolulu, Hawaii Territory, United States; citing enumeration district (ED) 2-114, sheet 5A, line 35, family 78, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 4586.
"California Death Index, 1940-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VGPS-BCH : 26 November 2014), Clarence Silva, 19 Dec 1985; Department of Public Health Services, Sacramento.
"United States Social Security Death Index," database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:JTZV-82F : 22 July 2020), Clarence Silva, 19 Dec 1985; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).