Man, I wish I had something to help you get closer. I do have a Clu Clu Land box in my collection but its fairly worn and missing a top flap. Good luck on finding the rest of what you need though!!
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NES Collection: Licensed -SE Cart Set Complete!!!
732 Games (676 Licensed, 56 Unlicensed)
Most Wanted: Mega Man 1 Manual and Empty NES Boxes.