What Is the Panama Canal?

What Was Pompeii?

What Was Hurricane Katrina?

Where Is the Empire State Building?

Who Was Sally Ride?

What Was the Great Depression?

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

Who Was Isaac Newton?

Mini Astronaut's Handbook

Who Was Dr. Seuss?

Survivors: True Stories of Children in the Holocaust

What Were the Salem Witch Trials?

Where Is the Tower of London?

Elly: My True Story of the Holocaust

What Was the Great Chicago Fire?

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

What Was the Wild West?

NBA Finals

The Dream Keeper and Other Poems

What Is Earth Day?: A Good Answer to a Good Question