Blanton, Annie Webb. [Letter and Invoices from Annie Webb Blanton to C. C. Cox, 1920], letter, April 1920; (https://texashistory.unt.edu/ark:/67531/metapth1243270/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .