Jim Allen wrote a piece on the Mahl Loader, a bit of history that Glenn Byron has been chasing.
http://www.fourwheeler.com/features/1705-the-holy-grail-of-jeep-industrial-accessories/
This post from 2016 shows a number of brochures and other information about the Mahl.
Thanks Dave for posting this and a big thanks to Glenn for unearthing this piece of Jeep History and to Jim Allen for getting it published!
It never ceases to amaze me, another accessory that I have not seen before.