No stove, sink, zipper door tent trailer?

I am looking to buy a tent trailer from a family member and it is the kind of tent trailer that is so light weight that it doesnt need to be licensed and it has no stove, sink, heater or any of that and it has a zipper door. I was just looking to see if anyone out there could or would know the name of it. If I were to guess I think its made by Coleman sometime in the 70's. If someone could help me out that'd be great! Or even a web site that'll help me search for old trailers? Thanks a bunch! (: