This paperback was sent to Mr. Shatner by Paramount Licensing. Back in the day any product that bore Mr. Shatner's likeness needed to be approved by Mr. Shatner before it could be licensed into a product. Paramount Licensing would then send Mr. Shatner a few copies of the product for his archives.
This paperback Star Trek Novel is one of those items sent to him for his archives.
Other than Mr. Shatner's likeness appearing on the cover signifying his prior approval; there is no other connection to Mr. Shatner other than it was in his archives. As a Star Trek collectible and to a book lover this may be the perfect item.