High Plains Underground Water Conservation District No. 1 (Tex.). The Cross Section, Volume 59, Number 12, December 2013, periodical, December 2013; (https://texashistory.unt.edu/ark:/67531/metapth641535/m1/1/: accessed July 6, 2020), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .