Map showing proposed system of levees for the protection of overflowed lands accompanying engineers report of 1912 : East Fork Trinity River, Rockwall, Collin and Dallas counties, Rockwall sheet., map, 1912; (https://texashistory.unt.edu/ark:/67531/metapth193706/m1/1/: accessed May 6, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .