It's not about the rights of pictures taken decades ago. They took pictures that someone took the time to restore and used them without credit or compensation to that person.
No sale.
I understand how big a favor the star-trek-history guy did us by restoring so many slides. But I'm pretty sure he has no enforceable claim of ownership for those images. CBS/Paramount owns the images, regardless of their condition. If CBS okayed the book, then the book is okay.
The thing is, Lincoln Enterprises in the 1970s sold all those transparencies illegally. Gene and Majel literally drove a truck onto the lot and stole the work prints from a studio vault. Then they cut them up in their kitchen and sold them by mail order.
Ironically, this little crime ended up rescuing tons of outtakes and behind the scenes images from certain destruction. Clips once scattered across the country by Lincoln Enterprises are now preserved on the Internet, so we're thankful it happened, but it was still illegal.
If someone stole the Mona Lisa, and I bought it and did some restoration work, I would not be the rightful owner of the Mona Lisa, my claims notwithstanding.