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In page Mad (magazine):

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Gaines sold his company in 1961 to Premier Industries, a maker of venetian blinds.[11] Around 1964, Premier sold Mad to Independent News, a division of National Periodical Publications, the publisher of DC Comics. In the summer of 1967, Kinney National Company purchased National Periodical Publications. Kinney bought Warner Bros.-Seven Arts in early 1969.[12] As a result of the car parking scandal,[citation needed] Kinney Services spun off of its non-entertainment assets to form National Kinney Corporation in August 1971, and it reincorporated as Warner Communications, Inc. on February 10, 1972. In 1977, National Periodical Publications was renamed DC Comics.