LTR 46n7, Oct 2010 OpenURL was devised to solve the "appropriate copy problem." As online content proliferated, it became possible for libraries to obtain the same content from multiple locales: directly from publishers and subscription agents; indirectly through licensing citation databases that contain full text; and, increasingly, from free online sources. Before the advent of OpenURL, the only way to know whether a journal was held by the library was to search multiple resources. An OpenURL link resolver accepts links from library citation databases (sources) and returns to the user a...