"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:KWF7-7G9 : 9 January 2021), Mary Ann Kent in household of Hannah J Lamb, Jackson, Jackson, Ohio, United States; citing enumeration district (ED) 40-10, sheet 8A, line 37, family 202, 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 3089.