Whose sister did Melissa Sue Anderson play in "Little House on the Prairie?"
Melissa Sue Anderson Melissa Sue Anderson (born September 26, 1962) is an American-Canadian actress. She began her career as a child actress. Anderson is known for her role as Mary Ingalls on the NBC drama series "Little House on the Prairie".
Karen Anderson (writer) Karen Kruse Anderson ( ; born September 16, 1932) is the widow and sometime co-author of Poul Anderson and mother-in-law of writer Greg Bear.