Drop A tuning: each tab line is a section. Over the whole song is an A bass drone.
This song is structurally improvised and as such you'll be hard pressed to play it
exactly as Dylan plays it. It's all in 4/4, however, so he only really varies the 
addition of a bar or two of open chugging to bridge between sections.

 B|---------------------------------------------------------------------------|
Bb|---------------------------------------------------------------------------|
 D|-----6---------------------------------------------------------------------|
 A|-4---6---5---5---0--0------------------------------------------------------|
 E|-4---4---5---5---0--0------------------------------------------------------|
 A|-4-------5---5---0--0------------------------------------------------------|
                    .  .

 B|---------------------------------------------------------------------------|
Bb|---------------------------------------------------------------------------|
 D|---------------------------------------------------------------------------|
 A|-0-0-0-0--1p0--0-0--3p0--0-0-7h8p7-6~-0-0-0-0--11--0-0-7h10-9--0-0-0-0-----|
 E|-0-0-0-0--1p0--0-0--3p0--0-0-7h8p7-6~-0-0-0-0--11--0-0-7h10-9--0-0-0-0-----|
 A|-0-0-0-0--1p0--0-0--3p0--0-0----------0-0-0-0--11--0-0-7h10-9--0-0-0-0-----|
    . . . .       . .       . .          . . . .      . .         . . . . 

 B|---------------------------------------------------------------------------|
Bb|---------------------------------------------------------------------------|
 D|-------------7--------------6----------------------------------------------|
 A|-0-0-0-0-7-6-7--0-0-0-0-6-5-6--0-0-0-0-5-7-4--0-----0-----0-----0---5-7-4--|
 E|-0-0-0-0-7-6-5--0-0-0-0-6-5-4--0-0-0-0-5-7-4--0-----0-----0-----0---5-7-4--|
 A|-0-0-0-0-7-6----0-0-0-0-6-5----0-0-0-0-5-7-4--0-----0-----0-----0---5-7-4--|
    . . . .        . . . .        . . . .        .     .     .     . 

 B|-------------------------------|---------------------------|---------------|
Bb|-------------------------------|---------------------------|---------------|
 D|-------------------------------|----------3h6p3-2~---------|----6----------|
 A|-2----0----7----6----9----(9)--|-0-4-3-2~----------0-0-0-0-|-4--6--5--5--0-|
 E|-2----0----7----6----9----(9)--|-0-----------------0-0-0-0-|-4--4--5--5--0-|
 A|-2----0----7----6----9----(9)--|-0-----------------0-0-0-0-|-4-----5--5--0-|
         .                          .                 . . . .               .