11Thomas Jefferson’s Notes on Roman Cement, [ca. 21 November 1818] (Jefferson Papers)
building materials; cement, Roman [index entry]
12Enclosure: Arthur S. Brockenbrough’s Statement of his Drafts on the University of Virginia Bursar, [ca. 26 November … (Jefferson Papers)
building materials; cement, Roman [index entry]
13Thomas Jefferson to Bernard Peyton, 7 February 1822 (Jefferson Papers)
building materials; cement, Roman [index entry]
14Bernard Peyton to Thomas Jefferson, 11 February 1822 (Jefferson Papers)
building materials; cement, Roman [index entry]
15Thomas Jefferson to Bernard Peyton, 15 February 1822 (Jefferson Papers)
building materials; cement, Roman [index entry]
16Bernard Peyton to Thomas Jefferson, 21 February 1822 (Jefferson Papers)
building materials; cement, Roman [index entry]
17Enclosure: Richard Randolph’s Directions for Making Cement, [ca. 10 April 1822] (Jefferson Papers)
building materials; cement, Roman [index entry]
18Thomas Jefferson to Richard Randolph, 13 May 1822 (Jefferson Papers)
building materials; cement, Roman [index entry]
19Thomas Jefferson to Bernard Peyton, 12 August 1822 (Jefferson Papers)
building materials; cement, Roman [index entry]
20Bernard Peyton to Thomas Jefferson, 19 August 1822 (Jefferson Papers)
building materials; cement, Roman [index entry]