Vintage cable end dump trailers?

[Espeefan]

As an alternative to hydraulic hoist end dump trailers, I've been scouring the internet for information on the old cable end dump trailers. They were trailers from the '50s and earlier that were dumped using a winch on the back of the truck pulling it. The winch would pull the trailer axles forward, and they prettt much seem to ressemble a frameless end dump trailer, except for the obvious lacking of a lift cylinder. Problem is I can't find much info on these types of trailers. Is anyone familiar with these old trailers? I'm trying to find more photos and information, but it seems non-existent!