[Telegram from Bill Markham, March 18, 1961], letter, March 18, 1961; (https://texashistory.unt.edu/ark:/67531/metapth1271020/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
[Telegram from Bill Markham, March 18, 1961], letter, March 18, 1961; (https://texashistory.unt.edu/ark:/67531/metapth1271020/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .