Originally Posted by Parasaurolophus
... I also tend to collect sewing books from used book stores. Although some of the information is the same, a lot of the older books will have historic techniques which aren't as popular today, but might help with a particular technique.
Seconding this. You can never pick up too many ancient sewing books, IMO. I have a sewing instruction/fashion dictionary book from 1939 and strangely enough it's been amazingly helpful for some of my costumes.