"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KWW2-V47 : accessed 18 August 2015), Jean Huizenga in household of Harry Huizenga, Ward 6, Berwyn, Berwyn Township, Cook, Illinois, United States; citing enumeration district (ED) 16-29, sheet 3B, family 66, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 773.