↑ 1.01.11.21.3 "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MZNS-Q78 : 20 August 2017), Oliver Calkins, Highland, Sullivan, New York, United States; citing enumeration district ED 99, sheet 174A, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,936.
↑ 2.02.12.22.3 "United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MSGK-3VL : accessed 29 December 2020), Oliver Calkin, Highland Township, Sullivan, New York, United States; citing enumeration district (ED) 90, sheet 4A, family 80, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,167.
↑ 3.03.1 "United States Census, 1910," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M57X-BCJ : accessed 29 December 2020), Oliver Calkins, Highland, Sullivan, New York, United States; citing enumeration district (ED) ED 139, sheet 2B, family 49, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1072; FHL microfilm 1,375,085.
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DNA Connections
It may be possible to confirm family relationships with Oliver by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
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