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. And he has won awards for his board books for the earliest learners, Duck Goes Potty and Bear Says "Thank You!" Dahl has written and edited numerous graphic novels for younger readers, authored the Library of Doom adventure series, the Dragonblood books, Trollhunters, and the Hocus Pocus Hotel mystery/comedy series. Dahl has spoken at schools, libraries, and conferences across the US and the UK, including ALA, AASL, IRA, and Renaissance Learning. He currently lives in Minneapolis, Minnesota in a haunted house.
Born in Chicago, Art Baltazar found his way early to comic book art and has been cartooning ever since he can recall. With a frenetic, hip hop style, Baltazar began self-publishing in 1994 with such titles as The Cray-Baby Adventures, Gyro-Man, Captain Camel & the Space Chicken, Jimmy Dydo, Lunar Lizard, Meteor Mite and the famous Patrick the Wolf Boy. Art has also drawn coloring books for Warner Bros. Art recently finished work on SUPERMAN FAMILY ADVENTURES, and is now co-writing the new series THE GREEN TEAM: TEEN TRILLIONAIRES. Art lives outside of Chicago with his wife, Rose, and children Sonny, Gordon, and Audrey.