"United States Census, 1930," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XS17-V4X : accessed 30 Sep 2012), Alvin Brunnworth in household of Walter Brunnworth, Hamel, Madison, Illinois; citing enumeration district (ED) 0043, sheet 8A, family 168, NARA microfilm publication T626, roll 541.