Dallas (Tex.). Police Dept. Boxes in the Texas School Book Depository [Negative], Photograph, ca. 1963; (http://texashistory.unt.edu/ark:/67531/metapth49509/ : accessed May 06, 2015), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting Dallas Municipal Archives , Dallas, Texas.
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