NEW YORK - Former President Carter, who already has a book coming out this fall about his post-White House years, is working on a memoir about his mother, Lillian, to be published next spring by Simon & Schuster. "Jimmy Carter has inspired millions. Its a great opportunity to meet the woman who inspired him," David Rosenthal, executive vice president and publisher of Simon & Schuster, said Thursday in a statement. The Lillian Carter book, currently untitled, is a "loving, admiring, wry homage" to the activist and former Peace Corps volunteer widely known as the down-to-earth "Miss Lillian." According to Simon...