I think a little more information on the recording would not be unwarranted:

Rounder Records announced the re-release of "The Live Wire" - Woody Guthrie's only known live recording - on April 19. One of the most significant recent finds in folk music history, the 2008 Grammy® winner for Best Historical Recording will be available solely on CD for the first time and features a PDF of the book with which this recording was first packaged.

In 2001, The Woody Guthrie Archives received 2 spools of wire recordings from a live Woody Guthrie performance held in Newark, New Jersey in 1949. With the help of many talented recording engineers, the Woody Guthrie Foundation transferred this rare live performance from a delicate wire recording to digital audio, and, with state-of-the-art technology, restored it to near-perfection.

Track Listing:
1. Intro: How Much? How Long?
2. Black Diamond
3. I Was There and The Dust Was There
4. The Great Dust Storm
5. Folk Singers and Dancers
6. Talking Dust Bowl Blues*
7. Tom Joad
8. Columbia River
9. Pastures of Plenty
10. Grand Coulee Dam
11. Told By Mother Bloor
12. 1913 Massacre
13. Quit Sending Your Inspectors
14. Goodbye Centralia
15. A Cowboy Of Some Kind
16. Dead or Alive
17. Jesus Christ Has Come!
18. Jesus Christ

*After only three verses, the recording abruptly ends, most likely due to the wire either simply running out, or breaking.