| Advertising for Preston & Merrill's Infallible Yeast Powder, featuring Uncle Sam standing on a vat of rising yeast, with a baker stirring. The text highlights it as "The Best Baking Powder in America" and states it "Never fails to make Light and Wholesome Bread, Cake or Pastry." The reverse side promotes the yeast powder as "FIRST BAKING POWDER MADE. PUREST. STRONGEST. CHEAPEST." and lists "S. F. Fire Alarm Boxes." Preston & Merrill was established in 1845 in Boston, MA. |
