This isn't directly motorcycle related but I found a really neat site while trying to list my dad's car for sale.
http://boston.kijiji.com/ or you can just go to kijiji.com and find your city.
The site is simialr to a craig's List, another words all classified ads. As I am searching through the motorcycle section, wouldn't you know there was a Perewitz bike in there for sale!! Can you find it?
Don't forget to look at the 66 Belair Wagon