3

Christopher Columbus

4

Maddy's Delaware Diary

4

Chip's Tips on Ghana

4

Maddy's Virginia Diary

4

Maddy's New Jersey Diary

3

Isthmuses of the World

4

Maddy's Maryland Diary

4

Maddy's New York Diary

4

Maddy's North Carolina Diary

4

Maddy's Florida Diary

4

Maddy's Rhode Island Diary

3

Vasco da Gama

4

Maddy's New Hampshire Diary

3

Napoleon Bonaparte

3

Coral Reefs of the World

3

Coastal Plains of the World

4

Chip's Tips on South Africa

4

Chip's Tips on Nigeria

3

Gulfs of the World

4

Maddy's Massachusetts Diary

4

Maddy's Texas Diary

3

Straits of the World

3

Glaciers of the World

4

Maddy's Connecticut Diary

4

Maddy's Mississippi Diary

4

Maddy's Georgia Diary

4

Chip's Tips on Canada

3

Amerigo Vespucci

4

Chip's Tips on United States

3

Capes and Peninsulas of the World