High Plains Underground Water Conservation District No. 1 (Tex.). The Cross Section, Volume 23, Number 11, November 1977, periodical, November 1977; (https://texashistory.unt.edu/ark:/67531/metapth1533032/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .