Cooper Review (Cooper, Tex.), Vol. 91, No. 52, Ed. 1 Thursday, December 31, 1970, newspaper, December 31, 1970; (https://texashistory.unt.edu/ark:/67531/metapth1541280/m1/1/: accessed June 30, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .