"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JLLF-HYC : 20 May 2014), Donald Conklin, Oct 1972; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
"Iowa, County Births, 1880-1935," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XVXY-TS6 : 11 March 2018), Donald Fay Conklin, 17 May 1913; citing Davenport, Scott, Iowa, United States; county district courts, Iowa; FHL microfilm 2,025,968.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KWZW-XVT : accessed 17 May 2018), Donald Conklin, Ward 1, Rock Island, Rock Island Township, Rock Island, Illinois, United States; citing enumeration district (ED) 81-70, sheet 12B, line 56, family 253, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 876.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XMV1-RSR : accessed 17 May 2018), Donald F Conklin in household of Raymond R Conklin, Davenport, Scott, Iowa, United States; citing enumeration district (ED) ED 42, sheet 7A, line 19, family 178, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 682; FHL microfilm 2,340,417.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDMF-RFD : accessed 17 May 2018), Donald T Conklin in household of Raymond R Conklin, Davenport Ward 6, Scott, Iowa, United States; citing ED 177, sheet 4B, line 87, family 109, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 513; FHL microfilm 1,820,513.
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