"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KWRP-XMH : accessed 30 Sep 2012), Lawrence Brunnworth in household of Wm O Brunnworth, Hamel Township, Madison, Illinois, United States; citing enumeration district (ED) 60-78, sheet 9A, family 160, NARA digital publication T627, roll 850.