1William Lambert to Thomas Jefferson, 14 November 1811 (Jefferson Papers)
Madison, James, Bishop; and observations of solar eclipses [index entry]
2Bishop James Madison to Thomas Jefferson, 19 November 1811 (Jefferson Papers)
Madison, James, Bishop; and observations of solar eclipses [index entry]
3Thomas Jefferson to William Lambert, 29 December 1811 (Jefferson Papers)
Madison, James, Bishop; and observations of solar eclipses [index entry]