It's okay. DK Publishing House, headquartered in London, England, was founded in 1974. Is a publishing company specializing in publishing books, magazines, maps and other multimedia products. Penguin Langdon Publishing House is a global publishing group formed by the merger of Penguin Publishing House in Britain and Random House in Germany in 20 13. Headquartered in new york, it is one of the most important publishing companies in the world today. There is no cooperation or direct relationship between the two publishing houses.