Found this edition of the French programme Pop Deux, dated December 5th 1970. It starts with a recording of Woody Guthrie followed by live performances by Blodwyn Pig, Matthews Southern Comfort. The best is last: 30 minutes of Fairport Convention (after Sandy Denny left) with great work from Richard Thompson and Dave Swarbrick.

http://www.youtube.com/watch?v=wMmV3Avvvu8