Non-Fiction
- Through the Brazilian Wilderness
- Theodore Roosevelt's Letters to His Children
- Bad Dogs Have More Fun: Selected Writings on Family, Animals, and Life from The Philadelphia Inquirer
- Living the 7 Habits: The Courage to Change
- Old Songs in a New Cafe: Selected Essays
- Three Little Words
- Ghost: The True Story of One Man's Descent into Madness and Murder
- Edward IV and Elizabeth Woodville: A True Romance
- A Dog's Guide to Humans
- River of Time: My Descent into Depression and How I Emerged with Hope
- Am I There Yet? The Loop-de-Loop, Zigzagging Journey to Adulthood
- Brain Maker: The Power of Gut Microbes to Heal and Protect Your Brain for Life
- Tsunami! (Rise and Shine)
- The South Beach Diet
- 14 Cows for America