According to an account in the New York Times, it was just before Christmas several years ago that David Storch, a music teacher, borrowed a copy of the score of Handel's "Messiah" from the Brooklyn Public Library. Through a clerical error, however, the transaction was not recorded. There were several other requests for the score, and the library staff, unaware that it had been checked out, spent many hours searching in vain for it through the stacks. On the day that Storch returned it, placing it on the circulation desk, he was astonished to hear the librarian spontaneously, joyously, and loudly shout, "The 'Me…