Ralph McQuarrie was an amazing artist. I remember in junior high saving $85 for these crazy expensive ILM art books just to be able to have the privilege of looking at his concept art and matte paintings whenever I wanted. I still have them today.
I was always far more interested in the mechanics of how they made the Star Wars and Indiana Jones films over the movies themselves. Ironically, my wife and I visited Treasure Island in the SF Bay today just to look over the building that was used as the setting for the Nazi nighttime book-burning scene in Indiana Jones and the Last Crusade.
Rest in peace, Ralph. You were an amazing artist, and you will be missed.