Among the various postcards I collect, horse cards are among one of my favorites. There is a large variety of breeds, colors, sizes, and tasks that the horse is capable of performing. Although the Morgan horse is sometimes referred to as America’s First Breed, the history behind the American Quarter Horse, could argue the case. The American Quarter Horse has a history that has been traced back to the 1660s and considered one of the most versatile breeds in the United States.