Claire, Try this one:
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Now, here's your trivia for the day. This site is the older version of the other link you have. But, it still works. I think it's easier to read and follow than the newer one. Dunno why, don't think it's the pink background that throws me, but I like this one better. ;)
If you want a book, look for "Curtains, Draperies and Shades" published by Sunset Books. I can hunt you up the ISBN if you want that. I've used that book so much, I recently had to take it the rest of the way apart (pages were coming out left and right!) and put the whole thing in a 3 ring binder. lol I called and the print shop would have spiral bound it for me, but that would have cost more than going and buying a whole new copy of the book. The binder, for $1, works for me. ;) (I'm not cheap, I'm conservative with my finances. Leaves more money for the important things, like fabric. LOL)
Sharon