Which character, an elder sister, was played by Melissa Sue Anderson in the NBC series "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".
Loni Anderson Loni Kaye Anderson (born August 5, 1946) is an American actress. She is known for her four-year run as receptionist Jennifer Marlowe on the sitcom "WKRP in Cincinnati" (1978–82).