Glassblowers were working at Jamestown in 1608-09, and again in 1621-24.
The trial glass they made in 1608 was sent to England--the first glass
manufactured by Englishmen in the New World. The small glass fragments
excavated at the furnace sites do not reveal what was produced, but
probably nothing more complicated than window glass, bottles and vials,
and plain drinking glasses. It is believed that the small glass factory
at Jamestown was the first English "factory" in America.