Waller-Joos-Stetzler
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KWCY-WWY : 17 May 2014), Perry Joos in household of John Joos, Princeville Township, Peoria, Illinois, United States; citing enumeration district (ED) 72-29, sheet 1B, family 16, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 865.
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Title "United States Census, 1940," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KWCY-WWY : 17 May 2014), Perry Joos in household of John Joos, Princeville Township, Peoria, Illinois, United States; citing enumeration district (ED) 72-29, sheet 1B, family 16, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 865. Short Title Perry Joos in household of John Joos, "United States Census, 1940" Source ID S2825 Linked to (1) Joos, Perry Herman