I'm surprised by the posts saying there aren't black folk artists around.
Some of the black artists that I have seen at folk festivals, just in the past couple of years, include: Corey Harris, Robert B. Jones, the Persuasions, Philadelphia Jerry Ricks, Odetta, Honeyboy Edwards, Linda Tillery, Madagascar Slim, Beau Jocque, Josh White Jr., Davell Crawford, Kim & Reggie Harris, Rosco Gordon, Vance Gilbert, John Jackson, Otis Taylor, Laura Love, Taj Mahal, Alvin Youngblood Hart, the Holmes Brothers, Clarence Gatemouth Brown, R.L. Burnside, Richie Havens, Barrence Whitfield, Ladysmith Black Mambazo, Guy Davis, Bill Morganfield, Big Jack Johnson, Ben Harper, Jackie Washington, the Fairfield Four, Eric Bibb, Cephas & Wiggins, Sonny Rhodes, Henry Butler, and Sweet Honey In the Rock.
Those are just people whose names I pulled out of programs for folk festivals I've personally been to in 2000 and 2001. I only attend four folk festivals a year, so the performers that I've seen in that time must only be a scratch at the surface of who is out there.
Jerry