3

John Smith

3

John Cabot

4

The Tower Bridge, London

3

Astronauts

4

Chip's Tips on Botswana

4

Buckingham Palace, London

4

Things to Do in Central Park

4

After the American Civil War

4

Maddy's Virginia Diary

3

Vasco da Gama

4

Maddy's Florida Diary

4

The American Revolution

4

Maddy's Tennessee Diary

3

Edmund Hillary

1

Jan and Jim

4

Chip's Tips on Canada

4

Maddy's Maryland Diary

3

Famous Explorers

4

Maddy's Colorado Diary

3

Space Exploration

4

Maddy's Michigan Diary

4

Gorillas and Other Primates

4

Maddy's Texas Diary

4

Maddy's Oregon Diary

4

Maddy's North Carolina Diary

4

Maddy's Maine Diary

4

Early North American Settlers

4

The Space Needle

4

Yellowstone National Park

4

America in the 20th Century