Leveen, Paul D. Portland News (Portland, Tex.), Vol. 8, No. 18, Ed. 1 Thursday, May 3, 1973, newspaper, May 3, 1973; (https://texashistory.unt.edu/ark:/67531/metapth864221/m1/1/: accessed December 11, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .