Early British cards rarely showed winter or religious themes, instead favoring flowers, fairies and other fanciful designs that reminded the recipient of the approach of spring. Humorous and sentimental images of children and animals were popular, as were increasingly elaborate shapes, decorations and materials. At Christmas 1873, the lithograph firm Prang and Mayer began creating greeting cards for the popular market in Britain The firm began selling the Christmas card in America in 1874, thus becoming the first printer to offer cards in America. Its owner, Louis Prang, is sometimes called the "father of the American Christmas card. " By the 1880s, Prang was producing over five million cards a year by using the chromolithography process of printmaking. However, the popularity of his cards led to cheap imitations that eventually drove him from the market. The advent of the postcard spelled the end for elaborate Victorian-style cards, but by the 1920s, cards with envelopes had returned. The extensive Laura Seddon Greeting Card Collection from the Manchester Metropolitan University gathers 32,000 Victorian and Edwardian greeting cards, printed by the major publishers of the day, including Britain's first commercially produced Christmas card.