"A 'stupendiferous, cosmically colossal' good time for all."
—Kirkus Reviews 


"Mortensen's pitch-perfect child humor combined with Phelan's knack for body language and facial expressions brings the pair's joy clearly to the pages."
—School Library Journal 


"Easily moves from one idea to another like an active, young boy's imagination does. It's a delight to read and re-read ... A great adventure for young readers."
—San Francisco Book Review