Only a year late! Sorry - just joined.
You’re definitely describing Star Wars Chronicles (though you’re remembering it to be even bigger than it was, which is normal. Memories do that! Nevertheless, it’s a whopper of a coffee table book, has the Boba Fett pieces all laid out.)
Best OT book ever made.
https://www.amazon.com/Star-Wars-Chronicles-Deborah-Fine/dp/081181498X