Wikimedia
Wikipedia: John Dewey
An in-depth biography of the American philosopher and educational reformer, John Dewey (1859-1952).
Annenberg Foundation
Annenberg Learner: American Passages: Spirit of Nationalism: Ralph Waldo Emerson
This features a brief biography of Ralph Waldo Emerson, an optimistic Transcendentalist author who's personal life was filled with tragedy. See "Ralph Waldo Emerson Activities" for related materials.