I have shown this before but it is an interesting flyer from the last couple of months of the legendary venue. The Action did appear but John Mayall did not. I have seen a suggestion that he turned up but for some reason Herbie Goins performed.
I have also read that Procul Harun was the correct original name of that band but it was misspelt on an early record and so, was changed. Whatever the truth, they didn’t turn up either, although their previous incarnation, the Paramounts, had played there. On that evening, an old faithful, Graham Bond, played.
A month after the Action, came the final night with Joyce Bond.