The world in hemispheres : with other projections &c., map, 1860; (https://texashistory.unt.edu/ark:/67531/metapth187368/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
The world in hemispheres : with other projections &c., map, 1860; (https://texashistory.unt.edu/ark:/67531/metapth187368/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .