Janet Landgard (December 2, 1947 - November 6, 2023).
Janet Landgard is an American actress and model. She was a regular on The Donna Reed Show, appearing in several episodes during Seasons 6, 7, and 8, as Karen, Jeff’s girlfriend.
She also had a brief movie career, starring with Burt Lancaster in The Swimmer (1968), Land Raiders (1969) with Telly Savalas, and Moonchild (1974) with Victor Buono.