| Year | Title | Pages |
|---|---|---|
| 1993 | Is a Blue Whale the Biggest Thing There Is? | 32 |
| 1995 | What's Smaller Than a Pygmy Shrew? | 32 |
Robert E. Wells is the author and illustrator of many intriguing and award-winning science books for children, including Can You Count to a Googol? and Why Do Elephants Need the Sun? He lives with his wife in Wenatchee, Washington.