In any old mags or CATs any projects, kits, that used a 9AP4 CRT?

This one (http://earlytelevision.org/441_line_tv.html) illustrates an oddball 5" tube, but the article states the sweeps are sufficient for a 9" tube.

Thanks!
I see I have sent some plans to Early Television Foundation my self so somewhere in this 800 sq ft condo with 1200 sq ft in it I might have parts and plans?
Wall to wall stuff is why I am trying to sell some items.
(see for sale section)