Some friends of ours used to have a small 5er like than only the entry door was on the back. It looked like a 10' slide in p-up camper that someone slid off and put on top of an axle. I don't remember the brand but they pulled it with a ford ranger. It fit there needs so we didn't give them too much static. But up until this picture I have never seen another one that small.
Bout the time that this subject came up, John Bozarth and Marge Cronan sent me this photo, they assumed I would resize it and post it, course, I did not realize I was supposed to do that! Due to heavy research schedule and camping with twins, I could not get to it till now. Sorry for the delay.
Anyway, this was taken in BPV in the RGV, shows the Scamp next to Montana.