1Thomas Jefferson to William J. Coffee, 15 May 1819 (Jefferson Papers)
building materials; cement, Roman [index entry]
2Bernard Peyton to Thomas Jefferson, 28 July 1819 (Jefferson Papers)
building materials; cement, Roman [index entry]
3Martha Jefferson Randolph to Thomas Jefferson, 7 August 1819 (Jefferson Papers)
building materials; cement, Roman [index entry]
4Andrew Smith to Thomas Jefferson, 16 April 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]
5Enclosure: Circular on Roman Cement, [before 16 April 1821] (Jefferson Papers)
building materials; cement, Roman [index entry]
6Thomas Jefferson to Arthur S. Brockenbrough, 20 April 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]
7Thomas Jefferson to Andrew Smith, 20 April 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]
8Thomas Jefferson to Patrick Gibson, 26 July 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]
9Thomas Jefferson to Andrew Smith, 26 July 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]
10Andrew Smith to Thomas Jefferson, 31 July 1821 (Jefferson Papers)
building materials; cement, Roman [index entry]