Yes, Jeff Dunham (born Jeffrey Dunham on April 18, 2024 in Dallas, Texas) does have a book, it's titled All By My Selves (with a space breaking up the word "myselves").
It's available on his web site for $15.00 in paperback, $9.99 for the Kindle version, $24.50 as an audio book, and $25.95 as a hardcover.
Dunham has performed all over the world, with over 400,000,000 hits on his YouTube videos, and some 6,000,000 DVDs sold. His combination of stand-up comedy and ventriloquism has won him countless scores of fans around the world.
Dunham will be appearing in Las Vegas on June 22, Del Mar, California on June 23, Durant, Oklahoma on July 6, and Harris, Michigan on July 13.