The planned tribute to the late civil rights activist would broaden the story told by the Georgia state park, long home to a giant carving of former Confederate president Jefferson Davis and Generals Robert E. Lee and Thomas "Stonewall" Jackson, said Bill Stephens, chief executive of the Stone Mountain Memorial Association. The bell would sound from the mountain top, though when or how often hasn't been determined, the newspaper reported. Because King's 1963 speech is copyrighted, permission of King's heirs would be required.