Thanks for your response and posting your collection - very impressive - and i'm thoroughly envious! Did you get the Stop Making Sense cassette sleeve signed personally?
After looking at yours, i'm not so sure about mine now. Unfortunately, i didn't get mine in person, but from somebody who claimed David was cycling around in Sheffield UK and managed to get him to stop and sign. He played in Sheffield in 2009 and i was honoured to see him perform.