"Texas Birth Index, 1903-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VDMP-82J : 1 January 2015), Conrad A Smith in entry for Barbara Louise Smith, 11 Aug 1937; from "Texas Birth Index, 1903-1997," database and images, Ancestry (http://www.ancestry.com : 2005); citing Texas Department of State Health Services.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:KWJ4-5R4 : 10 January 2021), Dinard Smith in household of Conrad Smith, Justice Precinct 4, Cass, Texas, United States; citing enumeration district (ED) 34-21, sheet 9B, line 58, family 184, 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 4002.