Another one of those " I thought I had/see everything by Kirby" moments. Where did this come from or go..concept art? Ah who care, just great to see this. That would make a nifty poster too.
Not sure whence it came if you're referring to the last image. First two are of a page in a Supergraphics calendar put out by Steranko, and the third image is from Kirby's Masterworks portfolio,but,yeah, you're right-main thing is we get to see it