3
John Cabot
3
John Smith
1
Jan and Jim
4
Buckingham Palace, London
3
Astronauts
4
Belém Tower
4
Maddy's Maryland Diary
4
After the American Civil War
3
Edmund Hillary
4
Chip's Tips on Papua New Guinea
4
The Space Needle
4
Maddy's Virginia Diary
4
Maddy's Texas Diary
4
Gorillas and Other Primates
4
Maddy's Maine Diary
4
The Tower Bridge, London
4
Maddy's Oregon Diary
3
Daniel Boone
3
Space Exploration
4
Things to Do in Central Park
4
Maddy's North Carolina Diary
4
Chip's Tips on Canada
3
Vasco da Gama
4
Maddy's Michigan Diary
4
Maddy's Tennessee Diary
4
Early North American Settlers
4
Grand Canyon
4
Chip's Tips on Botswana
4
Maddy's Massachusetts Diary
4
Maddy's Colorado Diary