Who Was Julius Caesar?

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

Who Was Aretha Franklin?

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

What Was World War I?

Children's Book of Philosophy

Who is RuPaul?

Lincoln's Last Days: The Shocking Assassination that Changed America Forever

Who Was Leif Erikson?

Kennedy's Last Days: The Assassination That Defined a Generation

What Were the Shark Attacks of 1916?

Where Are the Everglades?

Disasters!: A Who HQ Collection

The Rock Box!: A Who HQ Collection

Who Was Albert Einstein?

Who Was Marco Polo?

Who Was Abraham Lincoln?

Who Was Martin Luther King, Jr.?

Who Was Isaac Newton?

Who Was Gandhi?