High Plains Underground Water Conservation District No. 1 (Tex.). The Cross Section, Volume 24, Number 9, September 1976, periodical, September 1976; (https://texashistory.unt.edu/ark:/67531/metapth1533018/m1/1/: accessed June 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .