What Is Series Collection Set Of 10 Books - Paperback

1. What Was D-Day? 

2. What Is World Cup ?

3. What Are Summer Olympics ? 

4. What Was The Wild West ?

5. What Was The Hindenburg ?

6. What Was Stonewall ? 

7. What Where The Twin Towers ?

8. What Is The Statue Of Liberty ? 

9. What Was Pompeii ?

10. What Is The Panama Canal ?