Poster by Alva Edwards. Louisiana Agricultural Extension Division, c.1917“I had the conviction that the poster must play a great part in the fight for public opinion. The printed word might not be read, people might not choose to attend meetings or to watch motion pictures, but the billboard was something that caught even the most indifferent eye.” -George Creel, Chairman of the Committee for Public Information, in his World War I memoir, How We Advertised America. When Beans Were Bullets, an exhibit of food and agricultural posters from World Wars I and II currently on view at the USDA’s National Agricultural...