Book excerpt: A biography of Bunny Mellon, the style icon and American aristocrat who designed the White House Rose Garden for her friend JFK and served as a living witness to 20th Century American history, operating in the high-level arenas of politics, diplomacy, art and fashion. Bunny Mellon, who died in 2014 at age 103, was press-shy during her lifetime. With the co-operation of Bunny Mellon's family, author Meryl Gordon received access to thousands of pages of her letters, diaries and appointment calendars and has interviewed more than 175 people to capture the spirit of this talented American original.