1William Lambert to Thomas Jefferson, 14 March 1809 (Jefferson Papers)
Monticello (TJ’s estate); longitude of [index entry]
2Enclosure: William Lambert’s Calculation of Monticello’s Longitude from Greenwich, 14 November 1811 (Jefferson Papers)
Monticello (TJ’s estate); longitude of [index entry]
3William Lambert to Thomas Jefferson, 14 November 1811 (Jefferson Papers)
Monticello (TJ’s estate); longitude of [index entry]
4Thomas Jefferson to Henry A. S. Dearborn, 15 November 1811 (Jefferson Papers)
Monticello (TJ’s estate); longitude of [index entry]
5Bishop James Madison to Thomas Jefferson, 19 November 1811 (Jefferson Papers)
Monticello (TJ’s estate); longitude of [index entry]
6William Lambert to Thomas Jefferson, 22 November 1811 (Jefferson Papers)
Monticello (TJ’s estate); longitude of [index entry]
7Thomas Jefferson’s Notes on the Latitude of Willis’s Mountain, [ca. 19 December 1811] (Jefferson Papers)
Monticello (TJ’s estate); longitude of [index entry]
8Thomas Jefferson to William Lambert, 29 December 1811 (Jefferson Papers)
Monticello (TJ’s estate); longitude of [index entry]
9Thomas Jefferson to Bishop James Madison, 29 December 1811 (Jefferson Papers)
Monticello (TJ’s estate); longitude of [index entry]
10William Lambert to Thomas Jefferson, 8 January 1812 (Jefferson Papers)
Monticello (TJ’s estate).; longitude of [index entry]