If she were still alive, Anna Mary Robertson Moses would be 150. As it was, she made it more than two-thirds of the way before expiring on Dec. 13, 1961, at the age of 101. The farm wife from the borderland of southwestern Vermont and eastern New York embarked on a painting career in her late 70s, earning her the sobriquet "Grandma Moses" when her paintings of rustic life scored critical and popular success.