I had had the hankering for quite some time to scan some interiors from my copy of The Number of the Beast that is so heavily illustrated by Richard M. Powers. Really, until I picked up this edition at The Reading Place in Charlotte, Michigan, I had never imaged that such a thing existed.
I don’t actually know right offhand how many interior picture there are—except that there are quite a bit, far more than any of the Scribner’s juvies illustrated by Rogers, for example—but they are significantly subtler and more charming, I think, than the full-color cover itself.
With care, therefore, I finally scanned several as a sample, and I posted them to the “Later Works” section of my Heinlein cover art.
Author of four-dozen-odd pieces of literary criticism and reviews, novel Student Body, some poetry, and quite a bit of advising/Banner training materials.