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Concentration - Seasons

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Season 1 1958 - 1959

NBC United States, 1958 - 1959


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Season 2 1958 Prime Time

NBC United States


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Season 3 1959 - 1960

NBC United States


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Season 4 1960 - 1961

NBC United States


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Season 5 1961 Prime Time

NBC United States


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Season 6 1961 - 1962

NBC United States


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Season 7 1962 - 1963

NBC United States


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Season 8 1963 - 1964

NBC United States


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Season 9 1964 - 1965

NBC United States


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Season 10 1965 - 1966

NBC United States


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Season 11 1966 - 1967

NBC United States


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Season 12 1967 - 1968

NBC United States


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Season 13 1968 - 1969

NBC United States


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Season 14 1969 - 1970

NBC United States


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Season 15 1970 - 1971

NBC United States


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Season 16 1971 - 1972

NBC United States


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Season 17 1972 - 1973

NBC United States


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Season 18 1973 - 1974

Syndication United States


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Season 19 1974 - 1975

Syndication United States


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Season 20 1975 - 1976

Syndication United States


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Season 21 1976 - 1977

Syndication United States


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Season 22 1977 - 1978

Syndication United States


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Season 23 1984 - 1985

Syndication United States


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Season 24 1986 - 1987

NBC United States


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Season 25 1987 - 1988

NBC United States


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Season 26 1988 - 1989

NBC United States


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Season 27 1989 - 1990

NBC United States


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Season 28 1990 - 1991

NBC United States


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Season 29 1991 - 1992

NBC United States


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