Where is the Grand Canyon?
by Jim O'Connor ; illustrated by Daniel Colón
(Who HQ : your headquaters for history : who? what? where?, . The New York Times best-selling series)
Penguin Workshop, an imprint of Penguin Random House, c2015
Chronologies: p. 106-107
Includes bibliographical references (p. 108)
Fold-out col. map inside back cover
Grosset & Dunlap, an imprint of Penguin Random House