This beautifully illustrated book documents the exceptional postcard collection of Adolf Feller. In 1889 Feller, a Swiss entrepreneur, began collecting postcards on various business trips as mementos of his travels. When news of his hobby reached his friends and relatives, others began sending picture postcards as well. After his death, Feller’s daughter, Elisabeth, continued to seek out postcards from around the world. The collection now includes 54,000 postcards from 140 countries, with especially impressive examples from 1893–1930, the height of the picture postcard’s popularity. A wonderful testament to one man’s obsession, The World in Pocket-Size Format provides a new way to experience the history of the postcard as a means of both artistic expression and communication.