The McKinney Examiner (McKinney, Tex.), Vol. 81, No. 39, Ed. 1 Thursday, June 15, 1967, newspaper, June 15, 1967; (https://texashistory.unt.edu/ark:/67531/metapth1523825/m1/3/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .