1Enclosure: Ferdinand R. Hassler’s List of Scientific lnstruments Procured for the United States Coast Survey, November … (Jefferson Papers)
Hassler, Ferdinand Rudolph; and instruments for U.S. Coast Survey [index entry]
2Thomas Jefferson to Ferdinand R. Hassler, 25 December 1819 (Jefferson Papers)
Hassler, Ferdinand Rudolph; and instruments for U.S. Coast Survey [index entry]
3Ferdinand R. Hassler to Thomas Jefferson, 5 January 1820 (Jefferson Papers)
Hassler, Ferdinand Rudolph; and instruments for U.S. Coast Survey [index entry]
4Robert Patterson to Thomas Jefferson, 2 December 1815 (Jefferson Papers)
Hassler, Ferdinand Rudolph; and instruments for U.S. Coast Survey [index entry]
5William A. Burwell to Thomas Jefferson, 6 January 1820 (Jefferson Papers)
Hassler, Ferdinand Rudolph; and instruments for U.S. Coast Survey [index entry]
6Thomas Jefferson to William A. Burwell, 25 December 1819 (Jefferson Papers)
Hassler, Ferdinand Rudolph; and instruments for U.S. Coast Survey [index entry]
7Thomas Jefferson to Robert Patterson, 22 December 1815 (Jefferson Papers)
Hassler, Ferdinand Rudolph; and instruments for U.S. Coast Survey [index entry]
8Robert Patterson to Thomas Jefferson, 24 October 1815 (Jefferson Papers)
Hassler, Ferdinand Rudolph; and instruments for U.S. Coast Survey [index entry]
9William A. Burwell to Thomas Jefferson, 4 February 1820 (Jefferson Papers)
Hassler, Ferdinand Rudolph; and instruments for U.S. Coast Survey [index entry]
10Thomas Jefferson to Wilson Cary Nicholas, 19 April 1816 (Jefferson Papers)
Hassler, Ferdinand Rudolph; and instruments for U.S. Coast Survey [index entry]