The 30 hours comment came from a press conferance I have on CDR....think it was the US one.....?
I spoke to Carlton P. Sandercock at the time of RARESTONEBOWIE over the phone and he mentioned about getting a helping hand from Bowie's insiders for some of the material..other gear turned up on the good will of serious long term collectors.
Just before the bubble burst he was on the verge of putting together the original version Y.A's as "The Ghouster" with original track listing and rare inserts.
Bugger is that Bowie for holding back on the rare gear.