Plastic CorningWare Large Toy Plate, Corning Glass Works, Corning, NY, USA, about 1970-1979. Gift of Thomas P. Dimitroff. 2002.7.18 J. Plastic CorningWare Large Toy Plate, Corning Glass Works, Corning, NY, USA, about 1970-1979. Gift of Thomas P. Dimitroff. 2002.7.18 J.