Duluth, Minnesota: Duluth Superior Milling Co, 1909. Unbound. The multi-color illustrated advertising cover (envelope) features a African-American baker, dressed in a spotless white suit with red tie, resting his right elbow on a sack of Duluth Flour while holding a sliced loaf of white bread in his left hand. The reverse shows the Duluth Superior Milling Company’s Imperial Mill and text touting the quality of its flour. It is franked with a red 2-cent Washington stamp (Scott #332) and cancelled with a Rockport, Maine flag postmark dated April 14, 1909. In very nice shape; slightly trimmed during opening along the left edge. Very good. Item #008877
The Duluth Superior Milling Company, which was a subsidiary of the Standard Milling Company, operated seven mills in the Duluth area. Its Imperial Mill was the finest of its time and at six stories tall was by far the largest in the area. Crews often worked day and night. By 1892, additions had made it the largest flour mill in the world, and it produced an average of 6,300 barrels each day.