Jefferson Papers Indexes | Papers of Thomas Jefferson, Retirement Series (all volumes) | T | Tables requisite to be used with the Nautical Ephemeris for finding Latitude and Longitude at Sea (Maskelyne)
Thomas Jefferson to Edmund M. Blunt, 25 July 1811 [Retirement Series 4:55]
Thomas Jefferson to Melatiah Nash, 15 November 1811 [Retirement Series 4:244]