1Thomas Jefferson’s Notes on Roman Cement, [ca. 21 November 1818] (Jefferson Papers)
building materials; cement, Roman [index entry]
2Thomas Jefferson to William J. Coffee, 15 May 1819 (Jefferson Papers)
building materials; cement, Roman [index entry]
3Bernard Peyton to Thomas Jefferson, 28 July 1819 (Jefferson Papers)
building materials; cement, Roman [index entry]
4Martha Jefferson Randolph to Thomas Jefferson, 7 August 1819 (Jefferson Papers)
building materials; cement, Roman [index entry]
5Andrew Smith to Thomas Jefferson, 16 April 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]
6Enclosure: Circular on Roman Cement, [before 16 April 1821] (Jefferson Papers)
building materials; cement, Roman [index entry]
7Thomas Jefferson to Arthur S. Brockenbrough, 20 April 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]
8Thomas Jefferson to Andrew Smith, 20 April 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]
9Thomas Jefferson to Patrick Gibson, 26 July 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]
10Thomas Jefferson to Andrew Smith, 26 July 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]