Summer Festival 1971
August 6, 1971 - August 8, 1971
Summer Festival 1972
August 3, 1972 - August 6, 1972
Summer Festival 1973
August 2, 1973 - August 5, 1973
Summer Festival 1974
July 31, 1974 - August 4, 1974
Summer Festival 1975
July 28, 1975 - August 3, 1975
Summer Festival 1976
August 2, 1976 - August 8, 1976
Summer Festival 1977
August 2, 1977 - August 7, 1977
Summer Festival 1978
August 1, 1978 - August 6, 1978
Summer Festival 1979
July 31, 1979 - August 5, 1979
Summer Festival 1980
July 28, 1980 - August 2, 1980