Photo: [cs.calgarystampede.com](http://cs.calgarystampede.com) Every year since 1912, The Calgary Stampede has produced exciting and highly collectible posters, distributed across the prairies to advertise “The Greatest Outdoor show on Earth”. Canada’s largest annual event features an international rodeo competition, midway, stage shows, concerts, agricultural competitions, and the famous chuck wagon races. The graphic design of each of these posters are fantastic expressions of the era from which they were produced. -Greg Ball