Welcome, Douglas! Ironic... there is a vintage molded fiberglass trailer called the Cloud
9. It looks a lot like a Burro
, which it preceded.
There are just a few current makers of the little ones, the 13'ers, but plenty of vintage units out there from a long list of legacy manufacturers, including Burro
. The "Manufacturers" tab at the top of the page has links to many of them.
Best wishes as you explore the fun world of "egg" trailers!