1Robert Patterson to Thomas Jefferson, 23 September 1811 (Jefferson Papers)
The Nautical Almanac and Astronomical Ephemeris (J. Garnett); sent to TJ [index entry]
2Enclosure: Thomas Jefferson’s Account with Joseph Milligan, [ca. 2 December 1811] (Jefferson Papers)
The Nautical Almanac and Astronomical Ephemeris (J. Garnett); sent to TJ [index entry]
3Joseph Milligan to Thomas Jefferson, 14 December 1814 (Jefferson Papers)
The Nautical Almanac and Astronomical Ephemeris (J. Garnett); sent to TJ [index entry]