Geo. E. Kessler & Co. General Plan for the City of Dallas, Texas: Map Showing General Features of Suggested Improvements in Transportation Facilities Except Street Car Lines, map, 1911~; (https://texashistory.unt.edu/ark:/67531/metapth587008/m1/1/: accessed April 22, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .