Tandy Corporation. Radio Shack Division.Intercom, Volume 7, Number 6, December 1973,
periodical,
December 1973;
Fort Worth, Texas.
(https://texashistory.unt.edu/ark:/67531/metadc1764329/m1/1/:
accessed June 12, 2024),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu;
crediting UNT Libraries Special Collections.