4
Washington Monument
4
Famous Americans: George Washington
4
Maddy's Washington Diary
4
Maddy's Washington, D.C. Diary
3
Isthmuses of the World
3
Inventors and Inventions
4
Maddy's South Dakota Diary
4
Money
3
Caves of the World
3
Christopher Columbus
4
The American Revolution
4
From the American Revolution to the Civil War
4
The White House
4
Maddy's New Hampshire Diary
4
An Introduction to the History of the United States of America
4
Landmarks of the United States
4
Maddy's Idaho Diary
4
Jordan & Justine's Weekend Adventures
4
Maddy's Maryland Diary
4
Yellowstone National Park
4
Maddy's Oregon Diary
2
Map of the United States of America
4
Jordan & Justine's Weekend Adventures
4
History of the United States
3
Martin Luther King, Jr.
4
Mount Rushmore
3
A Capitol Dream
3
Bays of the World
3
Coastal Plains of the World
3
Judge