4

Famous Americans: Abraham Lincoln

3

Famous Explorers

3

Famous People - Part 2

3

Famous People

4

Famous Americans: Benjamin Franklin

3

Famous People - Part 1

3

Famous Explorers

4

Famous Americans: Thomas Jefferson

4

Famous Americans: George Washington

3

Martin Luther King, Jr.

3

Canyons of the World

3

Mountains of the World

4

Chip's Tips on New Zealand

4

Chip's Tips on Botswana

3

Comets

3

Capes and Peninsulas of the World

3

Rosa Parks

4

The Sites & History of Coney Island

4

Chip's Tips on Honduras

3

John Cabot

4

Chip's Tips on United States

4

Chip's Tips on Zimbabwe

4

History of the United States

3

Confucius

3

Frederick Douglass

3

Leif Erikson

3

Thurgood Marshall

4

Chip's Tips on South Africa

4

Chip's Tips on Tanzania

3

Astronauts