This URL was submitted for S. Muse. The marketer sent a well-thought-out email. The site is commercial, though--T-shirt printers/sellers. Sophisticated marketing technique, there. The page might be worth linking--keep an eye on it.
http://www.ooshirts.com/guides/From-Cotton-to-T-Shirts:-The-Role-of-Cotton-in-the-Civil-War.html