Here's another resource for old crafting books:
http://www.antiquepatternlibrary.org/
From their website: "This ongoing project is an effort to scan craft pattern publications that are in the public domain, to preserve them, so we can keep our craft heritages in our hands. Most of these scans have been graphically edited to make the images easier for craft workers to see, and to reduce file sizes. They are available, for free, to anyone who wants them, for educational, personal, artistic and other creative uses."
Only one "quilting" book, but there's absolute tons of other fiber art resources. I'm in the process of scanning some craft books (pamphlets) that my neighbor gave me - his mother kept EVERYTHING!