Texas. Department of State Health Services. Texas EMS Trauma News, Volume 11, Number 1, Winter 2024, periodical, January 2024; (https://texashistory.unt.edu/ark:/67531/metapth1637403/m1/1/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .