I keep an eye on a number of online quilting communities, and this blog post was referenced today, which is accompanied by a link to an article by by Janet Evenson & Patricia Cox Crews of the University of Nebraska-Lincoln.
Now, I've never actually used any of the products mentioned in the article, but this is something I will definitely reference should I ever choose to make a more ambitious, art-type quilt. However, there's a lot of good information about textiles in general here, things that we should all probably know if we're into making heirlooms.
Oh, and keep an eye out here... I've a give-away starting on Monday!