Now this interesting!. I was road crew on Zeppelin 1972 usa tour which seemed to be run by Tychobrea from Dallas but I have showco tee's from another tour. Can't remember but Billy Preston or the Stones. I've been found by a film production company here in the falling apart UK doing a programme on 70's groupies. So I can contribute a bit but apart from that I'd love to hear from anyone involved with all that.
Martin Pottinger