While he never wrote a book, there have been several books published *about* him or *inspired* by his show and life:
* "Bob Ross: The Happy Painter" by Annette Kowalski (2007) - A biography about Bob Ross's life and career.
* "Bob Ross: The Art of Happiness" by David K. Simmons (2012) - Explores the philosophy behind Bob Ross's approach to life and art.
* "Bob Ross: The Official Guide to Happy Accidents in Painting" by Walt Reed (2017) - A guide to replicating Bob Ross's techniques.
* "Happy Accidents in Painting: Bob Ross's Techniques for Joyful, Hassle-Free Painting" by Joan M. Carter (2021) - Another guide to learning Bob Ross's techniques.
If you are looking for books that teach you how to paint like Bob Ross, these latter two options might be the best choices for you.