Checking boundary markers from an air boat in the Everglades.
A Student Assistant Historian in the Assembly Room of Independence Hall,
Philadelphia, describes the signing of the Declaration of Independence
and the writing of the Constitution of the United States.
Hundreds of miles of unspoiled beaches, dunes, saltmarshes and rock
cliffs, with their abundant plant and animal life are now preserved in
National Seahores along both coasts of the United States.
Sea walk sessions at Acadia National Park, Maine, attract hundreds of visitors