High Plains Underground Water Conservation District No. 1 (Tex.). The Cross Section, Volume 25, Number 1, January 1979, periodical, January 1979; (https://texashistory.unt.edu/ark:/67531/metapth1533046/m1/1/: accessed July 9, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .