Organic Food Shop - http://www.naturallygoodfood.co.uk/
Wikipedia: Stained glass - http://en.wikipedia.org/wiki/Stained_glass
The Stained Glass Museum: A Brief History of Stained Glass - http://www.stainedglassmuseum.com/briefhis.shtml
Institute for Stained Glass in Canada - http://www.stainedglasscanada.ca/
At of Stained Glass - art-of-stained-glass.com
Creative Leicestershire - http://www.creativeleicestershire.org.uk/
Craft Links UK - http://www.craftlinks.co.uk/