Concept Art by Ralph Mcquarrie for the Star Wars Trilogy (1977, 80, 83) (Version 2)
www.youtube.com/watch?v=6MGeADKamuE - an 11 minute video from the Illustrated Art youtube channel.
The Blurb: the same blurb as the above video post.
www.illustratedfiction.com/artists/ralph-mcquarries-star-wars