To play verses w/o bar chords.
Other tab sayse use E--no way.  Use G and/or G7

Verse 1:
D                    G (or G7)             D
She caught the Katy, she left me a mule to ride.
G                    G7                    D
She caught the Katy, she left me a mule to ride.
D                                  G
My baby caught the Katy, left me a mule to ride.
G7                    
Train going off, and I rode along behind.
D                         A                    D           A
I got to have that little hard-headed woman of mine