Thomas Jefferson to John Barnes, 19 April 1821Thomas Jefferson to de Bure Frères, 19 April 1821Enclosure: List of Books to be Acquired by de Bure Frères, [ca. 19 April 1821]Thomas Jefferson to Joshua Dodge, 19 April 1821Peter S. Du Ponceau to Thomas Jefferson, 19 April 1821James Monroe to Thomas Jefferson, 19 April 1821Thomas Jefferson to Bernard Peyton, 19 April 1821Bernard Peyton to Thomas Jefferson, 19 April 1821Thomas Jefferson to Tarlton Saunders, 19 April 1821Enclosure: Thomas Jefferson’s Schedule of Installments to be Paid to James Lyle (1798–1850), [ca. 19 April 1821]Elizabeth Trist to Thomas Jefferson, 19 April 1821Thomas Jefferson to John Vaughan, 19 April 1821 