Thanks, Mr. C. Have you checked out "A Vision Shared"? I think the link is on the my facebook page. The video is a tribute to Woody and Leadbelly. Bruce is on it and half the planet as well: Emmylou, Arlo, Honey in the Rock, Taj Mahal, Pete Seeger, and, get this, Little Richard, who blows the house down.
Do you ever listen to Cisco Houston? Also on youtube you can find a video of Pete Seeger and Arlo doing "This Land is Your Land." It's the best rendition of it I have ever heard. You can also watch Arlo and his daughter Sarah doing "Union Maid." Wow, what a concert.
All the best,