when the cast member who co-wrote Episode 20 of the first season of M*A*S*H born ?
The Army-Navy Game (M*A*S*H):  The episode was co-written by cast member McLean Stevenson ("Lt. Col. Henry Blake"). McLean Stevenson: Edgar McLean Stevenson Jr. (November 14, 1927 – February 15, 1996) was an American actor most recognized for his role as Lt. Colonel Henry Blake on the TV series "M*A*S*H".
November 14, 1927