Woody Guthrie playing one of the older blues songs, John Henry. I don't know who the other players are with Guthrie, but it is a really neat short clip of the great folk singer.
I found another video from youtube, that features Alan Lomax. What I found out is that the two players with Woody are Sonny Terry, and Brownie McGee!!! This is a nice clip worth watching again just to hear the stories about Woody Guthrie:-)