High Plains Underground Water Conservation District No. 1 (Tex.). The Cross Section, Volume 24, Number 2, February 1978, periodical, February 1978; (https://texashistory.unt.edu/ark:/67531/metapth1533035/m1/1/: accessed July 8, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .