Waller-Joos-Stetzler
"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KS21-B8W : accessed 12 Feb 2014), Otto Schaefer in household of John Schaefer, Moore Township, Stevens, Minnesota, United States; citing enumeration district (ED) 75-13, sheet 3A, family 35, 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-B8W : accessed 12 Feb 2014), Otto Schaefer in household of John Schaefer, Moore Township, Stevens, Minnesota, United States; citing enumeration district (ED) 75-13, sheet 3A, family 35, NARA digital publication of T627, roll 1962. Short Title Otto Schaefer in household of John Schaefer, "United States Census, 1940" Source ID S306 Linked to (1) Schaefer, Otto Adolph