"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X4FH-9T1 : accessed 24 May 2020), Mary Dudys in household of Anthony Dudys, Rockaway, Morris, New Jersey, United States; citing enumeration district (ED) ED 66, sheet 12B, line 98, family 19, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1374; FHL microfilm 2,341,109.
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