I am trying to register a boat trailer in California that was originally from Arizona. The first owners lived here in Cal but registered it in Arizona. They are no longer living and somehow it came into the hands of the American Red Cross, then to another owner and then to an non profit organization, all here in Cal. The DMV here is telling me that I must get a bill of sale indicating how the American Red Cross got the boat and trailer. The boat is not the problem, it is the trailer that I can't get registered. Any suggestions of who to contact?