sentences:  The neighborhood's rehabilitation began in the 1920s, facilitated primarily by Anne Morgan of the Morgan banking family, who lived slightly farther north on Sutton Place.One Beekman Place, the 1929 co-op designed by Sloan & Robertson and Corbett, Harrison & MacMurray, is "the most prestigious Beekman Place apartment building".It was built by a group headed by David Milton, husband of Abby Rockefeller and son-in-law of John D. Rockefeller, Jr.