Horse Trailers Vin Numbers I Have A 1979 Hartman Horse Trailer. I Can't Locate The Vin # Or The Company Themselves.?

I have a 1979 hartman horse trailer. I can't locate the vin # or the company themselves.? - horse trailers vin numbers

Does anybody know where to find the VIN number on the trailer. I searched everywhere. I need the title and can not.