Permabooks was a paperback division of Doubleday, established by Doubleday in 1948. Although published by Doubleday's Garden City Publishing Company in Garden City, Long Island, the Permabooks editorial office was located at 14 West 49th Street in Manhattan.Promoted with the slogans Books of Permanent Value for Permanent Use and Books to Keep, the early Permabooks were priced at 35 cents. They did not feature the flexible covers usually associated with paperback books.