CorningWare, introduced by Corning Glass Works in 1958, revolutionized kitchenware with its durable Pyroceram material, which was resistant to thermal shock and could be used on stovetops, in ovens, and under broilers. The iconic 'Blue Cornflower' pattern, designed by Sue Timler, was introduced in 1961 and quickly became one of the most recognizable and popular designs, adorning millions of households worldwide. Its versatility and distinctive aesthetic made it a staple in American kitchens for decades.

This particular piece, the P-315-B, is a 2-quart rectangular baking dish, commonly used for dishes like meatloaf or casseroles. While later versions were made from different materials, the original Pyroceram versions are highly sought after by collectors. The Blue Cornflower pattern itself represents a significant era in American home goods design and continues to evoke nostalgia and appreciation for its classic, functional beauty.