"California Death Index, 1940-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VGP4-6YY : 26 November 2014), Ernest Neal Develter, 15 Nov 1987; Department of Public Health Services, Sacramento.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JG39-PM4 : 20 May 2014), Ernest N Develter, 15 Nov 1987; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K9Q4-TX3 : 6 February 2020), Ernest N Develter, Oroville, Oroville Judicial Township, Butte, California, United States; citing enumeration district (ED) 4-31A, sheet 1A, line 16, family 7, 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 193.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XCXL-CTJ : accessed 20 March 2020), Ernest H De Velter in household of Ray L De Velter, Oroville, Butte, California, United States; citing enumeration district (ED) ED 33, sheet 2A, line 23, family 33, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 113; FHL microfilm 2,339,848.
"California Birth Index, 1905-1995," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V25W-76G : 13 December 2014), Ernest N Devetter, 04 Oct 1913; citing Plumas, California, United States, Department of Health Services, Vital Statistics Department, Sacramento.
"Find A Grave Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVVS-6MDX : 26 July 2019), Ernest N Develter, 1987; Burial, Corning, Tehama, California, United States of America, Sunset Hill Cemetery; citing record ID 8721021, Find a Grave, http://www.findagrave.com.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MH3N-1XV : accessed 20 March 2020), Ernest Develter in household of Ray Develter, Oroville, Butte, California, United States; citing ED 3, sheet 13A, line 17, family 349, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 94; FHL microfilm 1,820,094.