And then there's Nimrod Workman who recorded a bunch of good stuff. And what's the one on the new Pete Seeger collection Spaw, about the guy who is working to organize the NMU and is killed by gun thugs. Harry Simms?
Also, there may be folks who'd come to your class. Are you up for "live music" story telling? Depending on where you are located, there may be some ideas here.