Vereinigte Staaten von Nord-Amerika [Sheet 2]., map, 1873; (https://texashistory.unt.edu/ark:/67531/metapth192786/m1/1/: accessed May 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Vereinigte Staaten von Nord-Amerika [Sheet 2]., map, 1873; (https://texashistory.unt.edu/ark:/67531/metapth192786/m1/1/: accessed May 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .