UrbanGlass, the internationally renowned not-for-profit glass center in New York City, publishes Glass: The UrbanGlass Art Quarterly. It is a wonderful, full color magazine whose only shortcomings are it isn't longer (at about 70 pages it isn't short – I just wish there was more) and it doesn't come out more frequently.
Available by subscription from UrbanGlass (call 800-607-4410) or from better magazine sellers (Barnes & Noble for instance), any glass enthusiast will get more than the $7 cover price worth of pleasure and inspiration from the photos alone.
Even the ads are cool.