WBAP-TV (Television station : Fort Worth, Tex.). [News Script: Tornado warning device], script, March 23, 1974, 6:00 p.m.; (https://texashistory.unt.edu/ark:/67531/metadc1966256/m1/1/: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .