Thanks for the thanks.
Ed, I don't think there is any print date information in Les Barker's booklets but if there is, you'll read it.The 'gorn' discussion reminds me of a branch of linguistics(?) in which they try to test theories about pronounciation in timeslong past by looking at the rhymes.
Our great Goethe who was in general a master of rhymes but has some awful rhymes in his oevre which are only understandable if you know that he comes from Frankfurt and how they pronounce the 'g'.
Wolfgang