Here is something interesting I found searching:
184. PRODUCER'S SCRIPT FOR STAR WARS: THE EMPIRE STRIKES BACK (Maybe one of the master amendment/finalization/editing bibles?)
This is the complete shooting script for TESB, used by producer Gary Kurtz during filming. Many of the scripts used filming were incomplete, as some aspects of the film's storyline & dialogue were kept secret even from etc. however contains some divergences in dialogue etc.
4th draft (incomplete) shooting script, 4.R draft (incomplete) shooting script etc...The Mask of TESB?
183. SCRIPT REVISION OF THE FOURTH DRAFT OF STAR WARS: THE EMPIRE STRIKES BACK
It is 59 pages of changes annotated by GL, changes in red. (Anybody have it?)
You will need to have Adobe Acrobat Reader installed to view the pdf (Free).
Some very cool stuff in this file & don't forget to zoom.
VIEW THE PDF