Waller-Joos-Stetzler
"United States Census, 1910," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MKXQ-8S4 : accessed 21 Jan 2014), Bertha Joos in household of Ernest Joos, Medina, Peoria, Illinois, United States; citing sheet , family 48, NARA microfilm publication T624, FHL microfilm 1374330.
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Title "United States Census, 1910," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MKXQ-8S4 : accessed 21 Jan 2014), Bertha Joos in household of Ernest Joos, Medina, Peoria, Illinois, United States; citing sheet , family 48, NARA microfilm publication T624, FHL microfilm 1374330. Short Title Bertha Joos in household of Ernest Joos, "United States Census, 1910" Source ID S200 Linked to (1) Joos, Bertha Ann