How can I get Episode 21 of Monty Python's Flying Circus?

It includes the sketch with John Cleese as Ludwig Van Beethoven. I have Googled, and looked on Amazon and tried various other searches but the compliations available don't include this sketch. I'd like to get hold of it if possible. I'd also like to know which episode included a cartoon of a man and a woman in Edwardian dress with the woman saying 'would you mind if I made a complete and utter fool of myself' and the man saying 'do, Beatrice, do'. And the Cardinal Richlieu court scene...Any ideas? Thanks.