John Hamm designs and builds commissioned leaded-glass windows and lighting at Hamm Glass Studios in Whittier, California. He began working with glass in 1979 after joining a museum-quality Tiffany reproduction studio at age 21. John has worked full time as a glass artist since 1984 and has operated his own studio since 1989. Recognized as a leading authority on Arts and Crafts-style leaded glass, he has completed commissions for clients throughout the United States. John has also trained numerous apprentices, sharing the specialized techniques and craftsmanship he has developed throughout his career.