Have a look here
http://home.planet.nl/~rjeroenv/links.htmlAlso...
INLAND GLASS WORKS, 6101 W. 65th St., Chicago, Ill.
(Division of Chamberlain, Inc.) (Portsmouth 7-7470).
George L. Chamberlain, president; E. L. Lilja, genĀeral manager.
Illuminating glassware, opal ware, heat-resisting cooking ware, pressed and blown specialties, private mould work.
(ex 1951 trade directory. Courtesy Glass-Study.com)