Brett, maybe you can try selling these things on collector communities. Here's an auction site for collectors that allow you to use Moneybookers (paypal alternative & you don't need a credit card).
Delcampe Auctions - buy & sell collectibles, postcards, coins, rare stamps, paper money, old paper, antiques & more
Please remember to
appraise these old/vintage items, so you'll get an idea how much anyone should pay for the items.
Once, this guy said that he saw a shoebox of old postcards at a garage sale and sold them on eBay. He was looking for about $15 for the whole thing. Someone bought it, then resold it for hundreds of dollars (about $400 - $500, can't remember).
For collectors, the old stuff cost more than the new ones in most cases.