Included in this historical and literary manuscript collection are letters by: John Adams, John Quincy Adams, Bronson Alcott, Robert Browning, James Buchanan, Robert Burns, George Washington Cable, John C. Calhoun, Henry Clay, Samuel Langhorne Clemens, Samuel Taylor Coleridge, Jefferson Davis, Delacroix, Abner Doubleday, Lord Alfred Douglas, Stephen Douglas, Theodore Dreiser, Ralph Waldo Emerson, Ferdinand I (Medici), Eugene Field, Millard Fillmore, John Galsworthy, Johann Wolfgang von Goethe, Oliver Goldsmith, Ulysses S. Grant, Alexander Hamilton, John Hancock, Joel Chandler Harris, Rutherford B. Hayes, William Hazlitt, Oliver Wendell Holmes, Ingres, Washington Irving, Andrew Jackson, Henry James, Thomas Jefferson, Andrew Johnson, Rudyard Kipling, Marquis de Lafayette, Abraham Lincoln, Henry Wadsworth Longfellow, William McKinley, James Madison, Marie de Medici, Edgar Lee Masters, Michelangelo Buonarotti, James Monroe, Napoleon I, Theodore Roosevelt, Peter Paul Rubens, Percy Bysshe Shelley, Robert Southey, Alfred Tennyson, William Makepeace Thackeray, Martin Van Buren, Americus Vespucius, Francois Marie Arouet de Voltaire, George Washington, Daniel Webster, Walt Whitman, and Woodrow Wilson.