Fifty issues later, NEW YORK REVIEW OF ARCHITECTURE is older, wiser, and still infested with rats. Come celebrate the Big Five-O with NYRA and our gracious hosts at Van Alen Institute on Thursday, May 7. Pour one out for the Union Carbide Building, ponder the enormity of Norman Foster’s JPMorgan Chase headquarters, and shake it like Mother Ann Lee as we toast to fifty fabulous issues. Who knows? You might even meet a special supplement you’ll want to take home…