1Thomas Jefferson’s Account with Joseph Milligan, [8–10 March 1809] (Jefferson Papers)
Garnett, John; Nautical Almanac and Astronomical Ephemeris [index entry]
2Thomas Jefferson to Joseph Dougherty, 27 May 1809 (Jefferson Papers)
Garnett, John; Nautical Almanac and Astronomical Ephemeris [index entry]
3Joseph Dougherty to Thomas Jefferson, 18 June 1809 (Jefferson Papers)
Garnett, John; Nautical Almanac and Astronomical Ephemeris [index entry]
4William Lambert to Thomas Jefferson, 4 September 1809 (Jefferson Papers)
Garnett, John; Nautical Almanac and Astronomical Ephemeris [index entry]
5William Lambert to Thomas Jefferson, 8 December 1809 (Jefferson Papers)
Garnett, John; Nautical Almanac and Astronomical Ephemeris [index entry]
6William Lambert to Thomas Jefferson, 19 April 1810 (Jefferson Papers)
Garnett, John; Nautical Almanac and Astronomical Ephemeris [index entry]
7Thomas Jefferson to Robert Patterson, 7 March 1811 (Jefferson Papers)
Garnett, John; Nautical Almanac and Astronomical Ephemeris [index entry]
8Robert Patterson to Thomas Jefferson, 12 March 1811 (Jefferson Papers)
Garnett, John; Nautical Almanac and Astronomical Ephemeris [index entry]
9Thomas Jefferson to Robert Patterson, 21 March 1811 (Jefferson Papers)
Garnett, John; Nautical Almanac and Astronomical Ephemeris [index entry]
10Edmund M. Blunt to Thomas Jefferson, 28 June 1811 (Jefferson Papers)
Garnett, John; Nautical Almanac and Astronomical Ephemeris [index entry]