The 18 foot"mid-size" pipe
frame trailer continued into 1940, and is renamed the "Clipper",
as Curtis-Wright gets
sold to Siver-Streak and rights to the Wally's beloved Clipper name
reverts back to Wally Byam.
This heavily modified example has unoriginal taillights and cabinets/appliances.
The single LPG tank on the tongue is the original concept.
Of course there were no original bathrooms in the first series of 18' Trailwind/Clippers.
The hole in the ceiling
next to the original hardwood wardrobe is for a missing Byam Heater