Wow, ask once, I get nothing, ask a year or so later and multiple people are posting scans for me! Thanks very much, EyeShotFirst, but I've already got scans that AxiaEuxine sent me. Interestingly, your ROTJ is an alternate one, with a different (non-matching) back and FOX logo on the spine instead of CBS FOX.
About the covers themselves that I'm making, I've decided to make less of an exact duplicate and more of an homage based on the layout. The credit boxes will be basically the same, the synopsis texts will be the same, but (mainly because it's very difficult to find good high-res images of those back photos) the pictures on the back will be different (though similar), and various logos throughout will be updated in accordance with the way they have been released now (i.e., I'll be using a red FOX logo instead of the CBS FOX on the spine, and DVD logos instead of VHS logos).