Saul Bellow, Derek Walcott, George Plimpton and Henry Louis Gates headline a list of award-winning writers who will come to the John F. Kennedy Library in Boston next month for a symposium on Ernest Hemingway's influence on world literature. The Hemingway Centennial on April 10-11 will mark the 100th anniversary of Hemingway's birth. Caroline Kennedy Schlossberg said the JFK Library Foundation was "honored to host this important event celebrating an artist whom my parents admired." Hemingway's manuscripts and correspondence are housed at the library.