"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VB9T-BNZ : 13 March 2018), John J Kling, Beat 2, Jefferson, Mississippi, United States; citing enumeration district (ED) 32-4, sheet 3A, line 6, family 30, 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 2034.
"United States World War I Draft Registration Cards, 1917-1918," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K3R7-QY1 : 13 March 2018), John Jeremiah Kling, 1917-1918; citing Jefferson County, Mississippi, United States, NARA microfilm publication M1509 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,682,929.
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