Jay: After thinking on your responce, then reading the discussion since, I went to the IH bible, 150 Years of IH by Wendel. Page 77, Corn, beet, bean and Cotton planters.
A small two row planter, the No. A-222, designed specifically for the Super A tractor, this planter was of the power hill drop design.
From the photo it's quite clear this planter hitches to the drawbar mounted on front side of final drives, the same way as Super A plows and is lifted by the rear rockshaft. The plow depth control would also control planting depth. Just behind the hitching point is a PTO type shaft, with chain drive back to planting units, PTO shaft is 90 degrees which connects to the seed plate drive on the left final drive.
I can't read the type, but would judge it is same planter as Haas has shown.
I did a creation of my own using the same principle for depth control. I put a one point fast hitch fork on a John Deere 247-247 planter and used it behind my 130. This system gives excellent depth control and placement of seed. I fine tuned this little 246-247 and my 130 one spring, got precise plates for the seed and went head to head with a new 6 row max-emerge Deere of the mid 90s. The farmer that hired me, said my little unit turned out a more uniform stand of corn than the 6 row machine. It was a wet spring, and he hired both of us, I was to do the small fields. I knew I had to do as good quality planting as that new unit, in the past I had planted more corn than these two guys together. It was plant it well, or I'd never hear the end of it.