[Houston Cotton (Exchange Building)], photograph, Date Unknown; (https://texashistory.unt.edu/ark:/67531/metapth683859/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Houston Cotton (Exchange Building)], photograph, Date Unknown; (https://texashistory.unt.edu/ark:/67531/metapth683859/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .