1Enclosure: William Lambert’s Calculation of the United States Capitol’s Longitude from Greenwich, 11 July 1822 (Jefferson Papers)
Greenwich Observatory, England; and prime meridian [index entry]
2Enclosure: William Lambert’s Methods of Calculating the Moon’s Parallaxes, 27–28 June 1822 (Jefferson Papers)
Greenwich Observatory, England; and prime meridian [index entry]
3William Lambert to Thomas Jefferson, 18 March 1822 (Jefferson Papers)
Greenwich Observatory, England; and prime meridian [index entry]
4William Lambert to Thomas Jefferson, 24 July 1810 (Jefferson Papers)
Greenwich Observatory, England; and prime meridian [index entry]
5William Lambert to Thomas Jefferson, 19 April 1810 (Jefferson Papers)
Greenwich Observatory, England; and prime meridian [index entry]
6William Lambert to Thomas Jefferson, 8 December 1809 (Jefferson Papers)
Greenwich Observatory, England; and prime meridian [index entry]
7William Lambert to Thomas Jefferson, 5 December 1809 (Jefferson Papers)
Greenwich Observatory, England; and prime meridian [index entry]
8Enclosure: William Lambert’s Table for Computing the Moon’s Motion, with Examples [ca. 19 September 1809] (Jefferson Papers)
Greenwich Observatory, England; and prime meridian [index entry]
9William Lambert to Thomas Jefferson, 17 September 1809 (Jefferson Papers)
Greenwich Observatory, England; and prime meridian [index entry]
10William Lambert to Thomas Jefferson, 4 September 1809 (Jefferson Papers)
Greenwich Observatory, England; and prime meridian [index entry]