United States. Bureau of the Census. P.L. 94-171 County Block Map (2010 Census): El Paso County, Block 5, map, January 7, 2011; (https://texashistory.unt.edu/ark:/67531/metapth380683/m1/1/: accessed April 28, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .