Aargh! How utterly stupid of me! COMPLETELY forgot about A Hard Day's Night!
I guess you mean Revolver, PC31? I never understood the different issues of albums on the two sides of the Atlantic. I'd have to agree on Rubber Soul though. What they started on Help, they expanded on on Rubber Soul, and took to heights on Revolver.
(Doesn't PC stand for Police Constable?)
"Can you take me back where I came from?"