"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MJ9J-M47 : accessed 23 October 2020), Hannibal Colby in household of Garfield Dixon, Tulsa, Tulsa, Oklahoma, United States; citing ED 204, sheet 3B, line 90, family 50, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1486; FHL microfilm 1,821,486.
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