"Throughout her long and storied life, Rachel Bunny Mellon's greatest passion was garden design. She and her husband, Paul Mellon, one of the wealthiest men in America, maintained homes in New York, Cape Cod, Nantucket, Antigua, and Upperville, Virginia, and she designed the gardens at all of them. She also designed gardens for some of her dearest friends, including the Rose Garden and the East Garden at the White House, at the request of President...