There could be a way to look for specific quilt types, but I am not aware of it. I will tell you that if you use Yahoo and search for Dresden quilts, that the listings will give you Quilting Board entries. The only way I know how to look on this website is to go to "Pictures" and just scan the titles. You can always type in Dresden or whatever in the search box and see what you get.
Maybe someone who knows this site really well, can enlighten us.