Sounds like quite an event. From the March 25, 1909 Skidmore New Era (Skidmore, Missouri), page 7:
A Big Demonstration.
Two hundred guests were served Saturday with hot biscuits and coffee by Barrett, Stoolfer & Owens in their store. It was a demonstration given exhibiting the superior qualities of their celebrated Bulte’s Best flour and fine Mayfair coffee. This firm has handled this one brand of flour so long, with such general satisfaction to their trade, that they have excluded all other make and keep only three grades of Bulte’s Best flour for their customers. The biscuits were made by Mrs. A. H. Garnett and the coffee prepared by Mrs. Henry Barrett, two adept hands in culinary art. The stoves used were the “New Perfection” oil stoves, furnished by Manchester & Dodds.
Text of ad reads, “Bulte’s Best. B stands for Bulte’s Best flour in town. U stands for users of it all the year ’round. L stands for less flour it takes to make cake. T stands for trouble you avoid when you bake. E stands for eaters who eat it with zest. S stands for sterling, the quality of Bulte’s Best. B stands for bread made from Bulte’s Best. E stands for ease with which it stands the test. S stands for satisfaction for those who use this flour. T stands for the throng who buy it every hour. Yours for better bread, Barrett, Stoolfer & Owens.”