||I found a pamphlet on the internet, will be more than happy to email a copy to you.
From what I have been able to gather, these trailers did not so much have a specific manual, but a maintainence chart. Also, we were lucky enough to find a manilla envelope in a cabinet in ours from the different components manufacturers.
We have a brochure on the Monomatic toilet, Magic Chef stove & oven, Coleman furnace, and one for the stove, which in all outward appearance is probably a replacement.
I have all, so if you would like them copied and mailed to you, I would be more than happy for a fellow vintage trailer traveler!
Just send me an address where you would like this mailed to. (I would scan & email, but too much to do that with.)