"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VY4K-76X : accessed 14 January 2016), William C Nickel in household of Lloyd L Nickel, Fraser Election Precinct, Clearwater, Idaho, United States; citing enumeration district (ED) 18-8, sheet 2B, family 52, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 744.
"United States, GenealogyBank Obituaries, 1980-2014," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QV5T-DGJR : accessed 14 January 2016), William Or Bill Charles Nickel, Idaho, United States, 08 Aug 2012; from "Recent Newspaper Obituaries (1977 - Today)," database, GenealogyBank.com (http://www.genealogybank.com : 2014); citing , born-digital text.