Go to
Google and type in RV transport, or RV hauling and you will get many sites for campanies that haul RVs. I have seen several Airstreams being hauled thru Oklahoma by a company I think is called RV Transport. The units were new, so I'm not certain if they would haul a vintage. First of all you need to find out just which Brunswick you want this trailer taken to. There are probably several towns by that name in America. So far you listed California and Florida, which are at opposite end of this country. Your hauler will need more specific instructions to give you a quote. Hope you get what you need.