Originally Posted by Lothlorian
I wonder if it was made during world war II because they may not have had aluminum because of the war. I will have to check it out
They made thousands of trailers to house war workers but not out of steel. It was a strategic material same as aluminum.
Here is an interesting documentary photo essay on the building of wartime trailers. Note that they have gone to great lengths to save metal. Steel roof corners, fender wells, plumbing and some frame rails have been changed to non metallic substitutes. Wheels and tires are removed on delivery for reuse. Other than the frame the biggest metal part is the water tank and they are working on a substitute for that.
The body is made of wood framing sheathed in plywood and covered in masonite. The roof is masonite with a padded canvas covering, waterproofed with 2 coats of paint.
Amazing what you can do with some masonite and canvas when you have to. A few of these masonite trailers survive.
Index for Ancestor of the Modern* Recreational Vehicle - Images from the Public Domain
Scroll down to the section "Western trailer company - production of trailers"
The trailer that started this thread, I would bet was made between 1937 and 1940. Probably in the Midwest. And it was one of the biggest most expensive RVs of the time.