1From Thomas Jefferson to William Dunbar, 3 March 1803 (Jefferson Papers)
forwarded to the Philosophical societyforwarded to the philosophical society
2From Thomas Jefferson to William Dunbar, 13 March 1804 (Jefferson Papers)
..., which I shall immediately forward to the Philosophical society, where it will be duly prized...
3From Thomas Jefferson to William Dunbar, 15 April 1804 (Jefferson Papers)
..., yet, presuming on your attachment to science, & attainments in it, and the......science...
4From Thomas Jefferson to William Dunbar, 25 May 1805 (Jefferson Papers)
...line, permits me to turn to philosophical subjects only when some circumstance forces...