@larsman - yes indeedy, they were working out the material that would become Dark Side and handed out a pamplet call Eclipse 'a piece for assorted lunatics' which was their working title for dark side. Of course my pamplet fell by the wayside.
Fast forward 50 years, I'd loaned my spinclean to a friend who had bought a collection from a widow who's husband had passed and was cleaning them.
He holds up this pamplet he found in The Wall and says whats this? I almost fell down, it was the concert pamplet. I've got it framed in my music room.