31William Lambert to Thomas Jefferson, 23 April 1812 (Jefferson Papers)
I transmit to the American philosophical Society , an abstract of such calculations as I have...
32William Lambert to Thomas Jefferson, 16 July 1812 (Jefferson Papers)
The Secretary of State having early in the present month, reported to Congress on the subject of...
33William Lambert to Thomas Jefferson, 24 June 1814 (Jefferson Papers)
The reformation of the Julian calendar by pope Gregory XIII , in the year 1582, is so near the...