Map of Oregon Territory west of the Cascade Mountains., map, 1858; (https://texashistory.unt.edu/ark:/67531/metapth187582/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Map of Oregon Territory west of the Cascade Mountains., map, 1858; (https://texashistory.unt.edu/ark:/67531/metapth187582/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .