Anheuser-Busch's Clydesdale connection to the Budweiser brand traces back to 1933 when August Busch Jr. surprised his father by having the majestic horses parade down a St. Louis street carrying beer to celebrate the end of Prohibition. This 1933 photo shows a six-horse hitch pulling a loaded wagon with the St. Louis stables in the background.
(Anheuser-Busch)