"Texas, County Marriage Records, 1837-1965," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QV14-S36K : 23 February 2021), Smith Graham and Cora Bell Russell, 25 Dec 1909; citing Marriage, citing Nolan, Texas, United States, Texas State Library, Archives Division, and various Texas county clerks; FHL microfilm 4,212,709.
"Texas Birth Certificates, 1903-1935," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X2VG-LMG : 1 March 2021), Cora Bell Russell in entry for Ronald Austin Graham, 05 Mar 1919; citing Tulia, Swisher, Texas, United States, certificate 14405, Texas Department of Health, Austin; FHL microfilm 4,492,160.
"Texas, Swisher County Records, 1879-2012," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QPHC-13FZ : 15 August 2019), Corabelle Russell in entry for James Russell Graham, 1 Dec 1923; citing Birth, United States, , p. , Swisher County and District Clerk, Texas.
"Texas Birth Index, 1903-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VDDW-VPS : 1 January 2015), Cora Belle Russell in entry for Jo Betsy Graham, 11 Dec 1928; from "Texas Birth Index, 1903-1997," database and images, Ancestry (http://www.ancestry.com : 2005); citing Texas Department of State Health Services.
"Texas Deaths, 1890-1976," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K782-B45 : 20 February 2021), Cora Belle Graham, 21 May 1975; citing certificate number 47529, State Registrar Office, Austin; FHL microfilm 2,240,147.