1Thomas Jefferson to Arthur S. Brockenbrough, [after 27 June 1819] (Jefferson Papers)
Palladio, Andrea; The Architecture of A. Palladio (G. Leoni) [index entry]
2Thomas Jefferson’s Specifications for Capitals at University of Virginia, [ca. 16 April 1821] (Jefferson Papers)
Palladio, Andrea; The Architecture of A. Palladio (G. Leoni) [index entry]