The pool of images available on Flickr grows larger and larger, with more than 90,000 images coming up if you search for 'stained glass'. Better these days to do a search in 'Groups' for 'stained glass'. More than 200 groups come up, showcasing specific categories such as English Pre-Victorian stained glass, Stained Glass in Brazil, and my favorite, a larger group featuring Stained Glass Details.
Details like this from Cringleford , Norfolk, England, UK
posted by the ever resourceful Leo Reynolds
In my desire to go deeper and deeper into searching out obscure photos of stained glass, I even ended up doing a search for 'stained glass' within the group 'Stl Architecture'. Speaking as one who has covered a good amount of stained glass in St. Louis, I found this especially interesting. There are nice photos of windows in places I've covered already - places like St. Mark's Episcopal and The Cathedral Basilica and the Really Big Jesus at Holy Redeemer in Webster Groves.
...and there are also a few maddeningly anonymous curiosities like this window, presumably in St. Louis, but with no specific location given and no other info.
photos from the arbitrarymarks photoset