11Thomas Jefferson to Francis Eppes, 1 January 1819 (Jefferson Papers)
Leschot, Louis A.; as watchmaker [index entry]
12Thomas Jefferson to Ferdinand R. Hassler, 25 December 1819 (Jefferson Papers)
Leschot, Louis A.; as watchmaker [index entry]
13Ferdinand R. Hassler to Thomas Jefferson, 5 January 1820 (Jefferson Papers)
Leschot, Louis A.; as watchmaker [index entry]