High Plains Underground Water Conservation District No. 1 (Tex.). The Cross Section, Volume 25, Number 5, May 1979, periodical, May 1979; (https://texashistory.unt.edu/ark:/67531/metapth1533050/m1/1/: accessed June 28, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .