Porsche Club of America. Maverick Region. The Maverick Newsletter, Volume 3, Number 6, June 1965, periodical, June 1965; (https://texashistory.unt.edu/ark:/67531/metapth848873/m1/1/: accessed July 8, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .