Mosley, Zack. [Letter from Zack Mosley to Major Phillips, August 29, 1967], letter, August 29, 1967; (https://texashistory.unt.edu/ark:/67531/metapth823288/m1/1/: accessed October 23, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .