Season 1 NBC , 1951 - 1952 Watch now Season 2 NBC , 1952 - 1953 Watch now Season 3 NBC , 1953 - 1954 Watch now Season 4 NBC , 1954 - 1955 Watch now Season 5 NBC , 1955 - 1956 Watch now Season 6 NBC , 1956 - 1957 Watch now