Esther Buhler Bradley, a screenwriter and the widow of General of the Army Omar N. Bradley, died on Feb. 3 in Rancho Mirage, Calif. She was 81. The cause was pneumonia, said Col. Charles Honeycutt, a former aide to the general. Mrs. Bradley, known as Kitty Buhler, wrote episodes for television, including "My Three Sons" and "The 20th Century Fox Hour." Film credits included "China Doll."