"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MN5J-W5B : accessed 6 August 2019), Ruth Judd in household of Chas H Judd, Engston Spings, Cheatham, Tennessee, United States; citing ED 8, sheet 10A, line 3, family 187, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1731; FHL microfilm 1,821,731.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:SPWQ-KHG : accessed 6 August 2019), Ruth Judd in household of Charley H Judd, District 6, Cheatham, Tennessee, United States; citing enumeration district (ED) ED 9, sheet 2A, line 28, family 29, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 2235; FHL microfilm 2,341,969.
"Tennessee, County Marriages, 1790-1950," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KZWG-S25 : 3 November 2017), Cheatham Mcelroy and Ruth Judd, 24 Apr 1931; citing Dickson, Tennessee, United States, Marriage, p. , Tennessee State Library and Archives, Nashville and county clerk offices from various counties; FHL microfilm 2,114,204.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K44D-49S : 29 July 2019), Ruth Mcelroy in household of Cheatham E Mcelroy, Civil District 11, Cheatham, Tennessee, United States; citing enumeration district (ED) 11-12, sheet 1A, line 75, family 10, 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 3879.