United States. Bureau of the Census. 2000 Census County Subdivison Block Map: Liberty Hill-Cedar Park CCD, Texas, Index, map, 2000; (https://texashistory.unt.edu/ark:/67531/metapth420186/m1/1/: accessed May 21, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .