This is from a live video. My theory's not very good, but the fingerings are all correct.

capo on 6th fret, not sure about the tuning, just experiment with it.

Asus4 - 032203
D sus4(add9)?- 030003
C - 01023x
G6add11 - 010023
G6 - 000023
Fmaj - 112331
Am - 0122xx

When playing the Asus4 part,try experimenting with hammering on and off the two 
strings you are playing with your middle two fingers. it can sound really cool. 
You can get the rhythm from listening to the song, its not too hard.

Asus4 (x02230@1)                          Dsus4(add)
 Men walkin' 'long the railroad            tracks

C (x32010@1)                           G6add11
Goin' someplace there's no goin'         back

G6add11                                            
Highway patrol choppers coming up over the bridge

Dsus4add9                   Asus4Hot (x02230@1)soup          on a campfire under the bridge

Shelter line stretchin' 'round the corner
Welcome to the new world order
Families sleepin' in their cars in the southwest
No home no job no peace no rest

FThe (133211@1)highway is alive tonight
 
              C (x32010@1)         G6add11            AmBut (x02210@1)nobody's kiddin' nobody 'bout      where it goes

Dsus4add9
I'm sittin' down here in the campfire light

Asus4
Searchin' for the Ghost of Tom Joad

The rest of it just goes on like this.