Unused poster art from 1977. I like this, though I can see why they didn't use it.
Various Ralph McQuarrie images for the film poster. The top right has the original versions of Han and Chewie shown.
Cool (industry paper, perhaps?) poster that I haven't seen before
And here are three Ralph McQuarrie concept paintings, which are always a treat...
I also found a blog-post detailing the history of the logo and font, which is lot more entertaining than it sounds. The link is here.