Military map of Nebraska and Dakota [Sheet 1]., map, 1857; (https://texashistory.unt.edu/ark:/67531/metapth288953/m1/1/: accessed April 19, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Military map of Nebraska and Dakota [Sheet 1]., map, 1857; (https://texashistory.unt.edu/ark:/67531/metapth288953/m1/1/: accessed April 19, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .