[Letter from Don Baker to Emil Provasek], letter, November 7, 1985; (https://texashistory.unt.edu/ark:/67531/metadc947905/m1/1/: accessed July 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
[Letter from Don Baker to Emil Provasek], letter, November 7, 1985; (https://texashistory.unt.edu/ark:/67531/metadc947905/m1/1/: accessed July 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .