High Plains Underground Water Conservation District No. 1 (Tex.). The Cross Section, Volume 21, Number 2, February 1975, periodical, February 1975; (https://texashistory.unt.edu/ark:/67531/metapth1532999/m1/1/: accessed June 28, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .