In 1891, fifteen Ohio, Pennsylvania, and West Virginia glass factories consolidated as the United States Glass Company to improve marketing efforts and, by sharing, to reduce the expense of fuel and glass molds. Each factory was assigned a letter for identification, and orders were handled through a central office in Pittsburgh.
To read this article — and over 25,000 more — try Kovels Membership FREE for 7 Days
Kovels Knowledge Members get full access to 25,000 articles on antiques and collectibles from 60 years of publication.