Porsche Club of America. Maverick Region. The Maverick Newsletter, Volume 3, Issue 2, February 1965, periodical, February 1965; (https://texashistory.unt.edu/ark:/67531/metapth848945/m1/1/: accessed December 18, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .