Douglas, J. Richardson's map of the city of Galveston in 1859 from Sandusky's survey made in 1845., map, 1859; (https://texashistory.unt.edu/ark:/67531/metapth190470/m1/1/: accessed September 25, 2017), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .