OCLC staff have restored approximately 16,500 National Union Catalog of Manuscript Collections (NUCMC) bibliographic records in WorldCat that had been replaced incorrectly in the recent OCLC reload of records from the Library of Congress. The loading process did not adequately protect records for which the WorldCat version was more recent and more complete than the record as distributed by LC. OCLC will now examine those records to determine the best way to process them while appropriately protecting enhancements already made to the OCLC versions of the records.