In broad strokes, the books look good. I still have to go through and read the physical copies, since that's always the best way to proofread and find typos. (Typos are mysterious that way. The only want to manifest themselves once the book is printed. They hide while they live in computer files.)
Some of the book's illustrations, though, did turn out looking kind of crap—a few are almost solid black on the page. I'm going to have to re-sample them, adjust for much higher brightness/contrast, and try again. Which means another 2–3 weeks before I can publish the print editions. Oh, well; them's the breaks.