This is an example of an FF book where the original, published story from August 1969 is gorgeous. As a kid in the 70s buying comics, a lot of the printing was garbage — the colors tended to bleed all over the place (and even a lot of the 60s material suffers from poor printing) but for whatever reason, the original publication of FF # 89 looks perfect.
These scans are nice, but they still don’t capture how great this art looks in the published version — it’s so high quality, I’d frame and hang a page from this book on the wall if I had any wallspace. Here are 4 pages. If Marvel/Disney/Lucasfilm could package Jack’s FF run and give each page this kind of treatment, you’d have a really beautiful representation of what Jack accomplished.