"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MF7B-RXQ : accessed 23 June 2018), Marmie Mccoy in household of Hiram Mccoy, White River, Johnson, Indiana, United States; citing ED 145, sheet 4B, line 75, family 99, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 442; FHL microfilm 1,820,442.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:V1TJ-GR5 : accessed 24 June 2018), Mamie Smith in household of Frank Smith, White River Township, Johnson, Indiana, United States; citing enumeration district (ED) 41-18, sheet 5B, line 71, family 96, 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 1059.
Indiana, Marriages, 1810-2001. Salt Lake City, Utah: FamilySearch, 2013.