"United States Census, 1910," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M54Q-XVB : accessed 12 Jul 2014), Harold L Dungan in household of David L Dungan, Dansville, Steuben, New York, United States; citing enumeration district (ED) 126, sheet 13A, family 319, NARA microfilm publication T624, FHL microfilm 1375093.
"United States Census, 1920," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MVSJ-XVL : accessed 12 Jul 2014), Harold L Dungan in household of David L Dungan, Dansville, Steuben, New York, United States; citing sheet 2A, family 34, NARA microfilm publication T625, FHL microfilm 1821267.
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