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The Digital Public Library of America (DPLA, http://dp.la) is a virtual library that makes photographic and other resources available from libraries across the United States. It organizes these resources into themed exhibitions (such as Women with Wings: American Aviatrixes), a map and a timeline. Content comes into the DPLA from a variety of libraries, museums, archives and other cultural institutions. Many of the resources are old photographs or scans of letters that are not subject to