How do I get ancient books in Kenshi?

Ancient Science Books are spread out over the world. Several shops in the world do sell them, but very few. Shops that have a chance of selling them are Scraphouse and Travel and Repairs Shop.Locations they can be found: Ancient Labs. Lost Libraries. Lost Town. Ancient Tech Labs.

How do you get ancient books?

The Ancient Book is a book held in the pocket slot, and is the God book aligned with Zaros. It can be purchased from Jossik for 5,000 coins after completion of the Horror From The Deep quest along with The Dig Site quest.