That's an interesting question. And wouldn't it be great if we could make our own vanilla wafers?!
Martha Stewart's baking cookbook has a recipe in it for graham crackers. I wonder if there might be a recipe for vanilla wafers in it, too. I don't have a copy of the book and my local library doesn't have it so I can't check. Someone on this site surely must have the book. Helloooooo out there!
"As a girl I had zero interest in the stove." - Julia Child
This is real inspiration. Look what Julia became!