Waller-Joos-Stetzler
"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KS21-Y3F : accessed 04 Mar 2014), Otto Joos, Horton Township, Stevens, Minnesota, United States; citing enumeration district (ED) 75-12, sheet 1B, family 12, NARA digital publication of T627, roll 1962.
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Title "United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KS21-Y3F : accessed 04 Mar 2014), Otto Joos, Horton Township, Stevens, Minnesota, United States; citing enumeration district (ED) 75-12, sheet 1B, family 12, NARA digital publication of T627, roll 1962. Short Title Otto Joos, "United States Census, 1940" Source ID S366 Linked to (1) Family: Joos, Otto / Traub, Rose Katherine