Heh. Ok, I'll see what i can do.
A 'one wheel trailer' is a light-duty thing, usually for cars. (1/4 ton or less payload) They had 2 bolt-on bumper brackets that were different depending on application. Those brackets came up to a standard height where they had an eye for pivot bolts that connect to they 2 tow eyes at the front of trailer. The trailer can pivot up/down, but is solid on all other axis. The wheel is on a 360 degree caster, so it always wants to rotate and trail your movement. To prevent wheel wobble it all sits a little nose down from level with the right setup of car ride height, bumper brackets, trailer.
Backing it up was their best feature, in use it's just bumper overhang. There's none of that 'turn opposite to move the back end' thing. None of the hand at bottom of wheel. It's closer to a "Continental wheel kit" for your spare tire than like a normal trailer.
They were pretty much extinct by the 1970s due to impact absorbing bumpers, and molded bumper covers coming in. Except for some sitting static at a car show, I've only ever seen some parts of one, not one outfitted to a moving car.
https://www.curbsideclassic.com/blog...wheel-trailer/
http://www.singlewheel.com
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Might have something else cooking too...
http://john-perry.com/vw/plaid.html
1968-73 interior
http://john-perry.com/vw/gallery.html
Just be glad i don't like Harvest Gold, Avacado Green, or the rest of those colors!!!
https://www.retrospace.org/2010/03/i...-vehicles.html 1
https://www.retrospace.org/2012/12/v...70s-motor.html 2
https://www.retrospace.org/2012/12/v...70s-motor.html 3
https://www.retrospace.org/2013/01/v...70s-motor.html 4