"Jinx", "BBC Sessions", "Irish Tour", "Live in Europe", "Rory Gallagher", and the live Taste album "On The Boards" should help you out a bit. Some of these albums may be out of print, but I found "Jinx" on Ebay about 6 months ago. I don't think Rory ever really put out a bad album, so they're all worth searching for.
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How to play Blues on guitar