1Benjamin Henry Latrobe to Thomas Jefferson, 1 August 1811 (Jefferson Papers)
polygraph; B. H. Latrobe uses [index entry]
2Benjamin Henry Latrobe to Thomas Jefferson, 2 July 1812 (Jefferson Papers)
polygraph; B. H. Latrobe uses [index entry]
3Benjamin Henry Latrobe to Thomas Jefferson, 28 June 1817 (Jefferson Papers)
polygraph; B. H. Latrobe uses [index entry]
4Benjamin Henry Latrobe to Thomas Jefferson, 28 July 1817 (Jefferson Papers)
polygraph; B. H. Latrobe uses [index entry]