A discussion with my neighbors reminded me of the Spartan Carousel:
Saprtan was a step up from Airstream (IMHO) in that era. It's a flat box, but the top edge is properly rolled so the seam is on the vertical surface. Modern trailers fail here.
The kitchen is task-oriented. I'd only fault the location of the refrigerator. It needs to move next to the window so an open door doesn't block the passageway. But I digress ....light and airy interior:
http://justacarguy.blogspot.com/2018...960s-cool.html
It makes my place look like a U-boat.