Sketch I, showing the progress of the survey in section no. IX from 1848 to 1857.
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Sketch I, showing the progress of the survey in section no. IX from 1848 to 1857., map, 1857; [Washington D.C.?]. (texashistory.unt.edu/ark:/67531/metapth187394/: accessed June 24, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting University of Texas at Arlington Library.