Michael Dahl is the prolific author of the bestselling Goodnight, Baseball picture book and more than 200 other books for children and young adults. He has won the AEP Distinguished Achievement Award three times for his nonfiction, a Teacher's Choice award from Learning magazine, and a Seal of Excellence from the Creative Child Awards. Dahl currently lives in Minneapolis, Minnesota.

"Superman created by Jerry Siegel and Joe Shuster by special arrangement with the Jerry Siegel family - Batman created by Bob Kane with Bill Finger - Wonder Woman created by William Moulton Marston"