R.G. LeTourneau, Inc.NOW, Volume 11, Number 17, September 6, 1946,
periodical,
September 6, 1946;
Peoria, Illinois.
(https://texashistory.unt.edu/ark:/67531/metapth1526517/m1/4/:
accessed July 16, 2024),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.;
crediting LeTourneau University Margaret Estes Library.