Friends, I have a high interest in buying a vintage trailer for my family (2 adults, 2 small kids). While I have been reading a fair amount on this forum and elsewhere, one thing I have not found is a good introduction to the trailer models and their differences. I see listings that include, for example, "Sovereign" "Land Yacht" "Ambassador" "Overlander" and "International." Can anyone point me to a good guide to these and other common terms? Thanks for your help.