[Image of an old hard drive used by the APD Communications Division, ca. 1970s?]
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[Image of an old hard drive used by the APD Communications Division, ca. 1970s?], photograph, [197?]; (texashistory.unt.edu/ark:/67531/metapth176299/: accessed January 22, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting Arlington Public Library.