Some other departures and their reasons:
Diana Millay- pregnancy (1967)
Donna MacKechnie- left for B'way musical "Company" (1969-70)
John Karlen (1970PT)- left to film "Daughters of Darkness" in Belgium
Conard Fowkes- left for "Edge of Night" (1967)
Don Briscoe- physical/mental breakdown (1970)
Roger Davis- left for Hollywood and 'pilot season' (1970)
David Selby- was unable to do the last weeks of DS as he was in the hospital with appendicitis (1971)