British designer David Hicks (1929-1998) wowed the English decorating world with his bold geometric prints, electrifying color combinations, and quirky mix of antique and contemporary furniture. Thanks to his prodigious talents, his gift for publicity, and his connection to the royal family through his wife, Lady Pamela Mountbatten (cousin of Prince Philip), Hicks attracted an A-list clientele. For decades, Hicks documented every salient moment of...