I've found video footage of Sandy Denny, yes it's true feast your eyes! let it fully load before you watch it for maximum enjoyment. She does North Star Grassman, Crazy Lady Blues, and Late November, A few glitches but it's video footage of Sandy Denny!
There's a great site here telling you where to buy her biography and the song book, as well as a Bio and gallery amongst other things.
Click on the Rainbow squid below to see my squidoo lens featuring my top 10 Sandy Denny songs.