LBJ & Lady Bird to Hemis Fair, San Antonio; gun control legislation; ceremony at Hemis Fair; speeches by Ed Clark, Guillermo Sevilla-Sacasa, John Connally & LBJ; LBJ & Lady Bird tour exhibits; LBJ receives questions from the press; painting for LBJ Library; to LBJ Ranch; lunch; riding with LBJ, Lynda Robb & Marie Fehmer to Scharnhorst, Johnson City & Lewis place; dinner; discussion about film at Hemis Fair