I just listed quite a lot of knitting magazines on ebay. There are back issues of Interweave Knits, Rowan and Vogue Knitting, some going back to the 80s and early 90s. I would love to make some money on them, but mostly I want them out of my apartment, so I set the prices wicked low (nothing over $5.00).
Take a look.
Bonus incentive: If you end up buying some of these and let me know you came from the blog, I'll pay shipping.