"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X4TW-ZDT : accessed 12 May 2018), Robert Armstrong, Orwell, Oswego, New York, United States; citing enumeration district (ED) ED 30, sheet 1A, line 12, family 8, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1635; FHL microfilm 2,341,369.
"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/K3BX-BQ7 : accessed 26 Jul 2014), Robert Armstrong, Orwell, Orwell Town, Oswego, New York, United States; citing enumeration district (ED) 38-33, sheet 1A, family 11, NARA digital publication of T627, roll 2714.
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