High Plains Underground Water Conservation District No. 1 (Tex.). The Cross Section, Volume 14, Number 4, September 1967, periodical, September 1967; (https://texashistory.unt.edu/ark:/67531/metapth1532910/m1/1/: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .