The openings and closings to radio programs of all types, from comedies (Blondie, The Jack Benny Program, Lum and Abner) to mysteries (Inner Sanctum Mysteries, The Black Chapel) to game shows (Can You Top This?, Truth or Consequences) to serials (Second Husband, Bachelor's Children) to crime dramas (The Falcon, Eno Crime Clues, The Green Hornet, Mr. and Mrs. North) to westerns (Gunsmoke, Wild Bill Hickok,...