4

Maddy's Colorado Diary

4

Hoover Dam

4

Maddy's Nebraska Diary

4

Maddy's Utah Diary

4

The Plains Indians People

4

Maddy's New Mexico Diary

4

Maddy's Arizona Diary

4

Maddy's Nevada Diary

4

Maddy's Kansas Diary

4

Maddy's Texas Diary

4

Maddy's Oklahoma Diary

2

Map of the United States of America

4

Grand Canyon

3

Canyons of the World

4

Maddy's Wyoming Diary

3

Rivers of the World