At times, there were as many as 7 significant factories operating in the city of Jeannette including some of the most well known in the history of the glass industry. Names like Jeannette Glass; Fort Pitt Glass; the Pittsburgh Lamp, Brass and Glass Company; American-Saint Gobain, Westmoreland Glass; and others all supplied the country with everything from plate glass windows, to bottles, to milk glass, and much more for many decades. Some estimates over the years indicate that Jeannette once produced somewhere between 70 and 85% of the world's glass. Unfortunately, Jeannette's glass industry was one of the early United States industry victims of cheap, foreign competition that made it less expensive to produce glass overseas and today only two glass factories remain in the city.