The hydraulics on mine were installed after market I would guess by the farmer that owned it. I did however find a flyer on the actual Anthony Hoist system thats now on my truck.

http://i1062.photobucket.com/albums/t492/Blind9078/T2eC16VysE9sy0iOwqBRI9FQkY5Q60_57_zpsfz3dwtcm.jpg


1949-52 Chevy 3800 1-Ton Flatbed
In the Stovebolt Gallery
More pix on Photobucket