"A book is a movie you hold in your hands", says Michael Bierut, co-founder of Design Observer who is inviting foreign countries to send in their best and most beautiful books for the annual exhibition. The 50 books | 50 covers competition is the longest continually running design competition in the United States. It started in 1923 by the American Institute of Graphic Arts as "Fifty Books". There's a video about it too. What a treat.