For roughly a decade beginning in the late 1940s, NBC and CBS offered viewers live original dramas. These anthology programs, such as “Kraft Television Theatre” and “Ford Television Theatre,” launched the careers of directors like Arthur Penn and John Frankenheimer, actors like Paul Newman and James Dean, and playwrights like Paddy Chayefsky and Rod Serling. Media historian Brian Rose looks at the forces that made this golden age such an intriguing chapter in TV history.