What is the name of this old glass pattern?
I found this site which lists many different styles of textured glass.

I think the particular one you had is somewhat close to the Florentine Wissmach on that site.



As for the best site to search, I'd say google image search, honestly. https://www.google.com/search?q=textured+glass+window&amp;source=lnms&amp;tbm=isch