John Rocco is a New York Times Bestselling author and illustrator of many acclaimed books for children, including Wolf! Wolf ! , winner of the Borders Original Voices Award for best picture book; Moonpowder ; Blizzard , and Blackout , a winner of the Caldecott Honor. Rocco also illustrated Whoopi Goldberg's Alice and the covers for Rick Riordan's internationally bestselling series Percy Jackson and the Olympians , The Kane Chronicles , The Heroes of Olympus and Magnus Chase and the Gods of Asgard . He also was the illustrator for both #1 New York Times Bestsellers Percy Jackson's Greek Gods and Percy Jackson's Greek Heroes . Most recently, Rocco's first book of nonfiction, How We Got To The Moon , was longlisted for the National Book Award.