found: Random House dictionary(studio glass: art glass produced by an independent artisan in the studio)
found: Web site for exhibition Trial by fire, contemporary glass, Oct. 23, 2007(studio glass movement: Toledo Workshops of 1962; these workshops established the traditions of the studio-glass movement)
found: Corning Museum of Glass Web site, Glass glossary, Oct 23, 2007(Studio glass: a term popularized in the 1960s for unique or limited-edition objects designed and made in a studio rather than a factory, often, but not necessarily, by the same person; Studio glass movement: a movement that began in the United States in the 1960s and has spread all over the world)
found: Answers.com citing Wikipedia, Oct. 23, 2007(the modern art glass movement ... began in the early 1960s; the turn of the 19th century was the height of the old art glass movement)