Unattributed:

Mama put my guns in the ground...
I can't shoot them anymore...
That long black cloud is coming down...
I feel I'm knocking on heaven's door...

        Knock..knock..knocking on heaven's door...
        Knock..knock..knocking on heaven's door...
        Knock..knock..knocking on heaven's door...

Baby stay right here with me...
'Cause I can't see you anymore...
This ain't the way it's supposed to be...
I feel I'm knocking on heaven's door...

        Knock..knock..knocking on heaven's door...
        Knock..knock..knocking on heaven's door...
        Knock..knock..knocking on heaven's door...

Son won't you remember me?...
I can't be with you anymore...
A lawman's life is never free...
I feel I'm knocking on heaven's door...

        Knock..knock..knocking on heaven's door...
        Knock..knock..knocking on heaven's door...
        Knock..knock..knocking on heaven's door...

(from http://www.guitaretab.com/d/dylan-bob/5760.html

A