Screenwriter Lawrence Kasdan wrote his first script draft for The Empire Strikes Back (though his was certainly not the first draft) by hand, and recently donated those handwritten pages to the Writers Guild Foundation Archive. Slashfilm got a peek at a few of those pages, and how they differ from the final version of the film.
Kasdan rewrote The Empire Strikes Back after Leigh Brackett's initial pass, and over at Slashfilm, you can see a handful of the pages detailing a scene between Luke and Yoda, Han dealing with an injured Luke on Hoth, and Han and Leia's famous "I love you" moment.
In the page below, you can see another scene between Han and Leia in Kasdan's original version:
See Lawrence Kasdan’s Handwritten Screenplay Pages for ‘Empire Strikes Back’ [/Film]