Earthbound Confidential chronicles the game's translation to English.
A proposal to crowdfund a book about the translation of Earthbound is going to show up on Kickstarter soon.
The book will be called EarthBound Confidential and will be written by Marcus Lindblom, who was the Translation Director/English writer on the game.
The book will be offered as an e-book, softcover, or hardcover edition and will also be a very limited run, most likely only available to order throughout the duration of the Kickstarter campaign. The company is currently deciding on how to handle orders for people who can not or do not wish to use Kickstarter.