Star Wars: The Empire Strikes Back, 4th Draft Script Notated by Prop Department

original production material

As the description says, this is a fourth draft script for The Empire Strikes Back. What makes it even cooler to me is that it was used by the prop department -- props from some of the scenes on Hoth are underlined and notated. 

The letter on the left was written on February 5, 1979 by Associate Producer Jim Bloom and then distributed to the different production heads. It asks them to prepare for different upcoming scenes being shot in Norway (Hoth). The circled scenes correspond to many of the notations in the script.

This draft differs from the final version of the script in a number of ways. The biggest change is that Vader never tells Luke he's his father -- he does try to get Luke to help him take over the galaxy, though. Just partners, I guess. :)

There are also some minor characters who never made the final cut. For instance, when Vader contacts the Emperor he first has to go through a Vizier who makes the Sith Lord wait. Crazy!