What Was the Hindenburg?

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

What Was the Great Chicago Fire?

The Plot to Kill Hitler: Dietrich Bonhoeffer: Pastor, Spy, Unlikely Hero

What Was the Great Depression?

Children's Book of Philosophy

The Boy Who Harnessed the Wind: Young Readers Edition

Disasters!: A Who HQ Collection

Courage & Defiance: Stories of Spies, Saboteurs, and Survivors in World War II Denmark (Scholastic Focus)

The Rock Box!: A Who HQ Collection

Isaac Newton

Who Was Albert Einstein?

Minecraft Creator Markus "Notch" Persson

Who Was Marco Polo?

Who Was Abraham Lincoln?

Who Was Martin Luther King, Jr.?

Who Was Thomas Alva Edison?

Who Was Marie Curie?

Who Was Leonardo da Vinci?

Who Was Gandhi?