Three point is the correct term for what IH called the rear hitch - the upper casting with pin was 1 point and the other two were on the lower bracket, but it is not a three point as in Cat "0", Cat 1, Cat 2 etc as most bigger tractor guys think of. The sleeve hitch is actually part of the implement, and the Brinly-Hardy adaptor used to hitch the implement to the IH built three point. The 3 point was painted yellow. Brinly-Hardy, Ohio Steel, and others made garden plows, disc, cultivators, tool bars, etc., that were IH approved and used with the three point. Other companies made everything from rear blades to lawn rakes to spreaders, to you name it. In later years there was a rear tiller, a rear rake/blade combo, plus garden carts that actually had IH's name on them, but by and large all the implements were "allied equipment" and built and tagged by other companies, and sold through IH dealers as approved equipment. You can find this equipment listed in Cub Cadet Special Duty Equipment brochures. The brochures are no longer available from Cub Cadet but can be found on ebay and from people that sell brochures, and there are a number of different brochures that cover from the Originals through the red 82 series tractors, and some of the equipment listed in them changed over the years to keep in line with the newer tractors.