Thomas Jefferson to Thomas Appleton, 16 April 1821 (first letter)Thomas Jefferson to Thomas Appleton, 16 April 1821 (second letter)William H. Crawford to Thomas Jefferson, 16 April 1821Enclosure: John C. Calhoun to William H. Crawford, 14 April [1821], enclosure no. 1 in William H. Crawford to Thomas Jefferson, 16 April 1821Enclosure: Peter Hagner to John C. Calhoun, 14 April 1821, enclosure no. 2 in William H. Crawford to Thomas Jefferson, 16 April 1821John Devereux DeLacy to Thomas Jefferson, 16 April 1821John Griffiths to Thomas Jefferson, 16 April 1821Thomas Jefferson to Bernard Peyton, 16 April 1821Bernard Peyton to Thomas Jefferson, 16 April 1821Enclosure: Thomas Jefferson’s Account with Bernard Peyton for Flour Sales, 16 April 1821Andrew Smith to Thomas Jefferson, 16 April 1821Enclosure: Circular on Roman Cement, [before 16 April 1821]Thomas Jefferson to Samuel Williams, 16 April 1821Thomas Jefferson’s Specifications for Capitals at University of Virginia, [ca. 16 April 1821] 