Osborn, Carolyn. [Letter from Carolyn Osborn to Daryl Tocker, October 11, 2007], letter, October 11, 2007; (https://texashistory.unt.edu/ark:/67531/metadc1841252/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .