Yes Penguin Langdon's two children's book brands, Ladybug and Puffin and Oxford Tree, have been selling well all over the world for many years. Penguin Langdon's book abbreviation. Penguin Random House was founded on 20 13, which was formed by the merger of Random House of Bertelsmann Group in Germany and Penguin Publishing Group of Pearson Group in Britain. It is one of the largest publishing companies in the world.