Rectangular segment of a window from Notre Dame Cathedral stained glass.  I have reproduced the basic geometric shape of a portion of a window from this church from an image of that a customer sent me from her trip this summer (2011).  I am grateful for that image and from it produced just from a small corner of one of her pictures about 5 historical patterns that will allow us all to enjoy the mastery of these artists.  This particular pattern is just the geometry of the window.  Other patterns have the painting templates included in the pattern so that with a light box, some glass painting power and a kiln, you will be able to achieve the effect of the originals.