"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KWCY-B9X : accessed 14 November 2017), Charles Lester Bradley in household of John L Bradley, Atlas Township, Pike, Illinois, United States; citing enumeration district (ED) 75-1, sheet 8B, line 55, family 165, 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 868.
