ZoomDetails Burton Ale & Porter Brewing Co, Wm Kiefer Saloon Stoneware Mug, St. Louis, MOCirca 1900 Stoneware Mug from the Burton Ale and Porter Brewing Company in Saint Louis Missouri. Also pictured is a saloon stoneware advertising mug from the William Wm Kiefer Saloon, also in St. Louis, MO. These are both very hard to find. The Burton Ale and Porter company was only in business for two years from 1898-1900 before it went out of business. Pre-Prohibition mugs.