"California Great Registers, 1866-1910," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VT67-BJG : 25 July 2019), Fred Young Wheelock, 03 Oct 1884; citing Voter Registration, Greenville, Plumas, California, United States, county clerk offices, California; FHL microfilm 977,087.
"California Great Registers, 1866-1910," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VT6W-ZR6 : 25 July 2019), Frederick Young Wheelock, 16 Jul 1896; citing Voter Registration, Greenville, Plumas, California, United States, county clerk offices, California; FHL microfilm 977,087.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MFDF-HNS : 29 July 2017), Frederick Wheelock in household of Darwin Wheelock, Precinct 10, Douglas, Colorado, United States; citing enumeration district ED 38, sheet 345A, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,090.
"California Great Registers, 1866-1910," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VT6W-HFN : 25 July 2019), Frederick Young Wheelock, 22 Aug 1892; citing Voter Registration, Greenville, Plumas, California, United States, county clerk offices, California; FHL microfilm 977,087.
"Find A Grave Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QV2D-4KFW : 13 December 2015), Fredrick Young Wheelock, 1933; Burial, Oroville, Butte, California, United States of America, Old Oroville Cemetery; citing record ID 67200235, Find a Grave, http://www.findagrave.com.
"United States Census, 1870", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDVX-QRK : 19 March 2020), F Y Wheelock in entry for Darwin Wheelock, 1870.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MH3N-SFQ : accessed 20 March 2020), Fred Y Wheelock, Durham, Butte, California, United States; citing ED 20, sheet 1B, line 77, family 19, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 94; FHL microfilm 1,820,094.
"California Great Registers, 1866-1910," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VT6W-W2Z : 25 July 2019), Frederick Young Wheelock, 22 Aug 1892; citing Voter Registration, Greenville, Plumas, California, United States, county clerk offices, California; FHL microfilm 977,087.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XCDR-3YL : accessed 20 March 2020), Fred Y Wheelock in household of Lloyd E Wheelock, Indian, Plumas, California, United States; citing enumeration district (ED) ED 5, sheet 1A, line 50, family 8, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 183; FHL microfilm 2,339,918.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XCXL-ZZT : accessed 20 March 2020), Frederick Y Wheelock, Oroville, Butte, California, United States; citing enumeration district (ED) ED 35, sheet 17A, line 93, family 480, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 113; FHL microfilm 2,339,848.
"California Great Registers, 1866-1910," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VT6W-CCB : 25 July 2019), Frederick Young Wheelock, 16 Jul 1896; citing Voter Registration, Greenville, Plumas, California, United States, county clerk offices, California; FHL microfilm 977,087.
"California Great Registers, 1866-1910," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VT6W-9C1 : 25 July 2019), Fred Young Wheelock, 03 Oct 1884; citing Voter Registration, Greenville, Plumas, California, United States, county clerk offices, California; FHL microfilm 977,087.
"California Death Index, 1940-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VGT6-YMC : 26 November 2014), Wheelock in entry for Grace Emma Smith, 16 Feb 1993; Department of Public Health Services, Sacramento.