Purple Window Glass -- Accident or Design?

Title: 
Purple Window Glass -- Accident or Design?
Author/Artist: 
Dungworth, David.
Published In: 
Glass News, no. 32 (July 2012), pp. 11-12, ill. 1362-5195
Subjects: 
Bib ID: 
AI91872
Notes: 
Overview of recent research into historical window glass.
Association for the History of Glass Ltd.