I've seen pictures but never one for real but..........somehow I wound up with the Parts Book for the L2/LW2 units😊
Years ago we had a D4 come in the shop & was fitted with an Athey overhead loader attachment on it. It was made so you loaded the bucket from the normal front position & then it went up over the top of the tractor & it dumped from the back so you didn,t have to turn around the tractor. It had a big heavy canopy over the machine & the operator but it was such a heavy rig that I don,t think they were too popular.
That and all the fines and dust that had to have been sifting down everytime a bucketful went overhead and came back😄