On an unusually warm Washington winter afternoon, Gerald Rafshoon, spry and trim at 90, stood and watched as I carefully leafed through the pages of a three-ring black binder at the dining-room table in the home of his granddaughter, Jaclyn Rothenberg. The paper was tissue thin and its color a light mustard. Jaclyn had suggested he pull out some of the documents he had stored away in his files from his years inside the Carter White House, where Rafshoon has served as Carter’s communications