Waller-Joos-Stetzler
"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KWRD-TQ3 : accessed 31 Mar 2014), Thomas Clark in household of George Clark, Danvers, Danvers Township, McLean, Illinois, United States; citing enumeration district (ED) 57-46, sheet 5B, family 110, NARA digital publication of T627, roll 842.
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Title "United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KWRD-TQ3 : accessed 31 Mar 2014), Thomas Clark in household of George Clark, Danvers, Danvers Township, McLean, Illinois, United States; citing enumeration district (ED) 57-46, sheet 5B, family 110, NARA digital publication of T627, roll 842. Short Title Thomas Clark in household of George Clark, "United States Census, 1940" Source ID S753 Linked to (1) Clark, George Thomas