Six talks on the eve of America's bicentennial celebrations by Daniel J. Boorstin, Librarian of Congress and former Senior Historian at the Smithsonian Institution, Washington DC.

In his final lecture, Dr Boorstin returns to the theme of exploration and discovery that he introduced in his initial talk. Looking now at the United States today, he discusses the forces within a technological and democratic society that stifle the spirit of free inquiry, and he examines some ways in which the exploring spirit is being kept alive.