Constellation Similarity Assertions

The Pittsburgh Plate Glass Company (PPG) was founded in 1883 in Creighton, Pennsylvania, by Captain John Baptiste Ford and John Pitcairn. The plant quickly became known for its glass products using the plate process and developed methods for creating thinner, and more versatile, high quality glass. The company made glass for the automobile industry and, during World War II, focused production on military projects, such as glass for airplanes and developing synthetic resins. In addition to glass, the company now produces paint, coatings, and chemicals and operates in over sixty countries.

From the description of Pittsburgh Plate Glass Company pension records, 1909-1939. (University of Pittsburgh). WorldCat record id: 587497481