"Texas Birth Certificates, 1903-1935," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VXML-G5X : 1 March 2021), Velmar Roe in entry for Roger Glenn True, 04 Feb 1926; citing Crowell, Foard, Texas
"United States Census, 1930," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:H6CR-D3Z : accessed 17 January 2023), Velma I True in household of Edgar E True, Littlefield, Lamb, Texas
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:K73H-JSL : 8 January 2021), Velma True in household of Samuel E True, Connelsville, Adair, Missouri