Belden, Dreanna L.. Historic Plaque, Polk County Courthouse Flagpoles., Photograph, October 27, 2005; digital image, (http://texashistory.unt.edu/ark:/67531/metapth6619/ : accessed May 16, 2012), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting UNT Libraries, Denton, Texas.
