United States Post Office Department. Preliminary post route map of the state of Florida : with adjacent parts of South Carolina, Georgia and Alabama showing also the neighboring West India Islands., map, 1876; (https://texashistory.unt.edu/ark:/67531/metapth298380/m1/1/: accessed September 19, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .