Columbia subject headings:
Harvard subject headings:
Edwards, Jonathan, 1703-1758
Emerson, Ralph Waldo, 1803-1882
Franklin, Benjamin, 1706-1790
Jefferson, Thomas, 1743-1826
Philosophy, American--18th century.
Philosophy, American--19th century.
Philosophy, American.
Pragmatism.
Thoreau, Henry David, 1817-1862
Princeton subject headings:
Philosophy, American--18th century.
Philosophy, American--19th century.