If a congressional committee asks "What do you know? And when did you know it?" Marvin Breckinridge (Mrs. Jefferson) Patterson will be able to answer, promptly. She would not need to plead the Fifth, nor forgetfulness. Her 67 engagement books, 1920-1987, stand safely in the bookcase beside her desk in her Woodland Drive mansion, ready to be sent off to the National Archives. In another room are her mother's agendas, 1890-1959, headed for the Library of Congress. At 81, ready to begin her autobiography, Patterson has perhaps one of the best documented personal histories of anyone who hasn't liv...
