Records of Wells, Water Levels, Pumpage and Chemical Analyses of Water from the Carizzo Aquifer in the Winter Garden Area, Texas, 1970 through 1977, report, September 1980; (https://texashistory.unt.edu/ark:/67531/metapth1203994/m1/12/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .