"United States Census, 1870", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDVX-QR2 : 19 March 2020), J H Wheelock in entry for Darwin Wheelock, 1870.
"Washington, County Marriages, 1855-2008," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QPMJ-GZF2 : 28 November 2018), John H Wheelock and Marie Odel Potier, 6 Mar 1897, Hamilton, Skagit, Washington, United States, Washington State Archives, Olympia; FamilySearch digital folder 007158075.
"Washington Death Certificates, 1907-1960," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NQ99-119 : 10 March 2018), John H. Wheelock, 07 Jan 1943; citing Renton King County, Washington, reference , Bureau of Vital Statistics, Olympia; FHL microfilm 2,024,064.
"Washington, County Marriages, 1855-2008," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QPMJ-F7QY : 28 November 2018), John H Wheelock and Marie Odel Potier, 6 Mar 1897, Hamilton, Skagit, Washington, United States, Washington State Archives, Olympia; FamilySearch digital folder 007174007.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K99P-L5D : 5 December 2019), John H Wheelock, Elliott Election Precinct, King, Washington, United States; citing enumeration district (ED) 17-66, sheet 1B, line 63, family 18, 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 4344.