Who Were the Accused Witches of Salem?: And Other Questions about the Witchcraft Trials

Boy Overboard: the award-winning middle grade companion novel to Girl Underground

How Did Slaves Find a Route to Freedom?: And Other Questions about the Underground Railroad

Hitler's Last Days: The Death of the Nazi Regime and the World's Most Notorious Dictator

A Journey with Henry Hudson

The Boy At the Back of the Class

What Are the Articles of Confederation?: And Other Questions about the Birth of the United States

The One That Got Away - Junior edition

Mysteries of Pompeii

Who Was Martin Luther King, Jr.?

Mysteries of Easter Island

Bomb: The Race to Build--and Steal--the World's Most Dangerous Weapon (Newbery Honor Book & National Book Award Finalist)

A Journey with Juan Ponce de León

Stay Where You Are And Then Leave

Why Did the Pilgrims Come to the New World?: And Other Questions about the Plymouth Colony

Kiss the Dust

What Was the Battle of Gettysburg?

Who Was Rosa Parks?

Who Is Jackie Chan?

What Was Pearl Harbor?