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