Because it worked out so well the last time: In what may be the first subpoena of its kind in decades, a federal judge has ordered a university to turn over records about a gathering of anti-war activists. In addition to the subpoena of Drake University, subpoenas were served this past week on four of the activists who attended a Nov. 15 forum at the school, ordering them to appear before a grand jury Tuesday, the protesters said. Federal prosecutors refuse to comment on the subpoenas. In addition to records about who attended the forum, the subpoena orders the university to divulge all records relating to the local chapter of the National Lawyers Guild, a New York-based legal activist organization that sponsored the forum. The group, once targeted for alleged ties to communism in the 1950s, announced Friday it will ask a federal court to quash the subpoena on Monday.