“Hopgood interprets this beloved ballad, written by Thiele and Weiss and made famous by Louis Armstrong. His colorful mixed-media collages present a hopeful world, filled with summery trees, sunny blue skies, and pastoral scenes from around the globe. . . . an upbeat story hour selection.” —Booklist

“With a satisfying night-to-day-to-night cycle, the book not only reinforces the concepts of colors but also provides a sense of security of the way things are supposed to be in the world. The repeated refrain of 'Wow!' throughout the book will elicit a chorus among young listeners at storytime.” —Booklist on Wow! Said the Owl

“Straightforward and flowing, this title makes a satisfying introduction to the colors of the day.” —School Library Journal on Wow! Said the Owl

“This sweet, wonder-filled picture book will make a good addition to toddler storytime and a perfect bedtime read, too.” —The Horn Book on Wow! Said the Owl