WATERVILLE, Maine — Returning to her student dormitory back in 1990, Wellesley College graduate Christine Bicknell Marden received a message from Barbara Bush asking her to call the White House.It was a day before Mrs. Bush delivered a now-famous commencement address at the all-women's college in Wellesley, Massachusetts. Marden, who gave the student commencement speech, rushed to her room to call the former first lady back.