Washington / DC. (gov) When something is proclaimed the best thing since sliced bread, that praise does not encompass as much time as one might think. Sliced bread, wrapped for sale in wax paper, first appeared on U.S. store shelves on this date in 1928 in Chillicothe, Missouri. The Chillicothe Baking Company’s innovation of uniform, pre-sliced bread loaves remained local for a short while. By the 1930s, the obvious convenience of satisfactory sliced bread was spreading nationally. In large part, this was due to the Wonder Bread brand, founded in 1921, adopting the automatic slicer. There are some 2’600 commercial bakeries across the United States, employing over 118’000 workers. These establishments make a lot of dough: over 30 billion USD per year – according to the U.S. Census Bureau.