In 1945, Penguin began what would become one of its most important branches, the Penguin Classics, with a translation of Homer's "Odyssey" by E. V. Rieu. Between 1947 and 1949, the German typographer Jan Tschichold redesigned 500 Penguin books, and left Penguin with a set of influential rules of design principles brought together as the "Penguin Composition Rules", a four-page booklet of typographic instructions for editors and compositors. Tschichold's work included the woodcut illustrated covers of the classics series (also known as the medallion series), and with Hans Schmoller, his eventual successor at Penguin, the vertical grid covers that became the standard for Penguin fiction throughout the 1950s. By this time the paperback industry in the UK had begun to grow, and Penguin found itself in competition with then fledgeling Pan Books. Many other series were published such as the "Buildings of England", the "Pelican History of Art" and "Penguin Education".