"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9WB-3Z4 : accessed 14 July 2019), Isaac J Grass, Magisterial District 4, Illwill, Clinton, Kentucky, United States; citing enumeration district (ED) 39, sheet 16A, family 300, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,516.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M285-KQN : accessed 14 July 2019), Isaac J Gross, Illwill, Clinton, Kentucky, United States; citing enumeration district (ED) ED 64, sheet 2A, family 30, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 471; FHL microfilm 1,374,484.
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