A flour mill operation from Pillsbury-Washburn Mills Company in Minneapolis Minnesota was displayed in the Palace of Agriculture.   The process of wheat growing, flour making, and bread baking were all demonstrated.  Photographs of the wheat, wheat machinery, harvesting, soil keeping and grain threshing were also displayed in the exhibit.  The history of the mill was also demonstrated through pictures.  A freight train loaded the products from the mill and was run through mixers into dough, and then electric ovens. It was then was baked and sampled.   There was a case divided into eighty compartments that demonstrated various milling separations from the time the wheat left the field until it became flour.

Reference: St. Louis Journal of Agriculture, June 2, 1904

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