"United States Census, 1930," index and images, FamilySearch (https://familysearch.org/ark:/61903/1:1:SPHC-6K6 : accessed 24 May 2015), Hattie Nichols in household of Henry Nichols, District 2, Monroe, Tennessee, United States; citing enumeration district (ED) 0008, sheet 10B, family 209, line 59, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 2267; FHL microfilm 2,342,001.
"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K4ZS-MDH : accessed 24 May 2015), Marie Nichols in household of Henry Nichols, Loudon, Civil District 1, Loudon, Tennessee, United States; citing enumeration district (ED) 53-1, sheet 17A, family 299, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 3914.