According to the CBC (Canadian Broadcasting Corporation), recently librarian Kristian Brown found an early version of the original Star Wars movie script while going through the science fiction collection at the University of New Brunswick’s library. The Script was dated March 15th, 1976 and was marked as the “fourth draft”.
Several things in this early script were interesting to note including Brown mentioning that this script made it clear that Han Solo shot first in the Cantina Bar scene. It has been debated by Star Wars fans for years on whether who shot first; Han or Greedo. Well according to this script, Han definitely shot first.
Among other differences is that Luke Skywalker was referred to as Luke Skykiller, and the movie was originally referred to as “Saga 1”.
Here is the famous Cantina Bar scene: