Catherine Merrill, 87, was last seen this morning at 140 Clarendon Street. She has memory and vision problems and wears glasses. She is white, 5'4" tall, 90 pounds, gray hair, wearing a purple hat, black jacket, dark pants, dark sneakers with white stripes and purple gloves. She frequents Shaws on Huntington Avenue, Trinity Church & Downtown Crossing. She carries a medicare card with her name on it. Anyone with information should call 911.