"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MSNY-369 : accessed 01 Nov 2014), Frank Hart, Pickney Township, Lewis, New York, United States; citing sheet 2A, family 35, NARA microfilm publication T623, FHL microfilm 1241070.
"United States Census, 1920," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MJLG-987 : accessed 01 Nov 2014), Frank C Hart, Watertown Ward 7, Jefferson, New York, United States; citing sheet 19B, family 480, NARA microfilm publication T625, FHL microfilm 1821117.
"United States Census, 1930," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/X7ZP-QH2 : accessed 01 Nov 2014), Frank C Hart, Watertown, Jefferson, New York, United States; citing enumeration district (ED) 0054, sheet 6B, family 173, NARA microfilm publication T626, roll 1443.
"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KQ1F-NZM : accessed 01 Nov 2014), Frank C Hart, Ward 4, Watertown, Watertown City, Jefferson, New York, United States; citing enumeration district (ED) 23-73, sheet 13B, family 453, NARA digital publication of T627, roll 2545.
"New York, County Marriages, 1908-1935," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XVGB-K9V : accessed 01 Nov 2014), Frank C. Hart in entry for Brainard E. Petrie and Dora M. Hart, 24 Jul 1917; citing 275, , New York, United States; FHL microfilm 895215.
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