FOR THIER encouragement and support I thank my literary agent of many years, Sterling Lord, and at Viking, my vigilant editor Wendy Wolf and her assistant Clifford Corcoran. Maggie Berkvist proved to be the Kit Carson of picture scouts. Many thanks to my old friends Marilyn McCully and Michael Raeburn for their hospitality in London and for a memorable visit to Cliveden. For courtesies along the way I’m also grateful to Daniel Aaron, John Y. Cole, and the staffs at Harvard University Archives, Harvard College Library, and manuscript collections at the Library of Congress and the New York Public Library. My deepest indebtedness is to my wife, novelist Anne Bernays, for her patient readings of the manuscript and invaluable editorial advice.