A baking dish in the "Blue Cornflower" pattern from Corning Ware. The dish measures 10" across with a 9" baking width. The bottom is marked "Corning Ware P-309 9 Inch Made in U.S.A." and the condition is very good.
From Wikipedia: Corning Ware's range/oven-to-table service first featured the blue 'Cornflower' pattern decoration, designed by Joseph Baum, an artist at the Charles Brunelle Advertising Agency in Hartford, Connecticut. It became the trademark of Corning consumer products for three decades.
