So glad to hear you are interested in another Airstream! But we sort of like them here....
Good suggestions of where to look so far. I would also check ebay, to keep a tab on going prices and maybe you will see something nearby! We bought our Bambi on ebay and everything in the process turned out great! I would also suggest looking in all your newspapers, especially the "Thrifty Nickel" type papers. You might even post a "wanted" in a local paper! Also keep your eyes open as you travel around. It is amazing how many Airstreams one can find just parked somewhere.
Good luck in your search.
Mrs. NorCal Bambi (traveling in S Tardis)