How can I find information on a 1982 Coachmen Travel Trailer ?

I’ve inherited a coachmen 25’ travel trailer, not sure if you’d call it a bunkhouse. It’s a model year of 82-84, not exactly certain. It’s a bumper pull. At the front it has a couch that folds out into a bed. As you go back, you have the sink and gas range on one side, the refrigerator on the other. Next, on each side you have single size bunk beds on each side, and the bathroom at the back, no bathtub, just a shower stall. It has no slide out.

I have tried finding information online about it, but can’t get anything exact on the model. I’d love to find an owners manual. I’m wanting to restore it, much is in good condition, so want to find any information I can on it.