I have only heard of the video and haven't heard of it being published as a book at all. A quick online search shows that he has a book out about breeding Gila Monsters, but nothing published by him on ball pythons.


I found this book that you might be interested in, but obviously it's not by Seward.

The Complete Ball Python: A Comprehensive Guide to Care, Breeding and Genetic Mutations
by Kevin McCurley

An Amazon search of the title or author will find it for you. Sorry I couldn't be more helpful on the Seward book.