3
Daniel Boone
3
Christopher Columbus
4
Famous Americans: Abraham Lincoln
4
Famous Americans: George Washington
3
Amerigo Vespucci
4
America in the 20th Century
3
Marco Polo
4
From the American Revolution to the Civil War
4
The American Civil War
4
History of the United States
3
Juan Ponce de León
3
Edmund Hillary
4
Famous Americans: Benjamin Franklin
3
Samuel de Champlain
3
Vasco da Gama
4
After the American Civil War
4
An Introduction to the History of the United States of America
3
Major Religions of the World
4
Early Native Americans
3
John Smith
4
History of Carnival Rides
4
The American Revolution
4
The Sites & History of Coney Island
3
David Livingstone
3
All About History
3
Neil Armstrong
4
Early North American Settlers
3
Famous Explorers
4
Famous Americans: Thomas Jefferson