Jeff has a girlfriend ...
Janet Landgard (born December 2, 1947)
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, playing the part of Karen, Jeff’s girlfriend.
She also starred with Burt Lancaster in The Swimmer (1968), Land Raiders (1969) with Telly Savalas, and Moonchild (1974) with Victor Buono.