Some good choices there Charlie. I'd have posted Ogdens too.
Let it Bleed and London Calling were turned into stamps a few years ago. I think I preferred The Stones Sticky Fingers cover though.
Have always liked Peter Blake's work. Bought one of his original screenprints a few years ago. Superb colours. Best known for this:
Also did this. One of my favourite albums too.
Peter Saville did some interesting stuff at the time.
Also, I have to post this one.