"United States Census, 1930," index and images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XSGD-8M1 : accessed 29 May 2015), Helen Auwema in household of George Auwema, Chicago (Districts 0751-1000), Cook, Illinois, United States; citing enumeration district (ED) 0895, sheet 6B, family 105, line 85, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 455; FHL microfilm 2,340,190.