LeTourneau Technical Institute. LeTourneau Tech's NOW, Volume 11, Number 4, February 15, 1957, periodical, February 15, 1957; (https://texashistory.unt.edu/ark:/67531/metapth1526855/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .