Tonahill, Joe H. & Colvin, Emmett, Jr. Cause Number 37,900. Amicus Curiae Brief for Appellant, Jack Ruby, legal document, June 15, 1966; (https://texashistory.unt.edu/ark:/67531/metapth1117914/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .