HI Chris - Hadn't seen that thread. Seems like I've gone over ground covered, to some extent.
I have a film clip of Kukishin-ryu solo bojutsu, but no permission to upload publicly.
I was surprised at the lack of Kogen Itto-ryu. I suppose if one winnowed through all the film clips of the Budokan kobudo taikai, one could find a clip, but I'm putting that out there as encouragement for some diligent person other than me
Ellis Amdur