High Plains Underground Water Conservation District No. 1 (Tex.). The Cross Section, Volume 7, Number 5, October 1960, periodical, October 1960; (https://texashistory.unt.edu/ark:/67531/metapth1532827/m1/1/: accessed June 4, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .