"United States Census, 1920," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MJ3Y-G6P : accessed 05 Aug 2014), Minnie Hamburg in household of Frank Hamburg, Chicago Ward 15, Cook (Chicago), Illinois, United States; citing sheet 2B, family 38, NARA microfilm publication T625, FHL microfilm 1820326.
"United States Census, 1930," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XSP4-2TG : accessed 05 Aug 2014), Minnie Hamburg in household of Frank Hamburg, Chicago (Districts 1001-1250), Cook, Illinois, United States; citing enumeration district (ED) 1240, sheet 5B, family 89, NARA microfilm publication T626, roll 469.
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