"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3CV-ZQG : accessed 5 January 2017), Earnest Beauchamp in household of Charles Beauchamp, Bogle township Gentry town, Gentry, Missouri, United States; citing enumeration district (ED) 80, sheet 13B, family 241, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,855.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHVX-1W4 : accessed 5 January 2017), Ernest L Beauchamp in household of Charles A Beauchamp, Middlefork, Worth, Missouri, United States; citing enumeration district (ED) ED 7, sheet 2A, line 18, family 31, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1250; FHL microfilm 2,340,985.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K7WT-DH4 : accessed 5 January 2017), Ernest Beauchamp in household of Charley Beauchamp, Middlefork Township, Worth, Worth, Missouri, United States; citing enumeration district (ED) 114-7, sheet 1A, line 32, family 9, 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 2164.