1From Thomas Jefferson to Robert Patterson, 27 March 179[8] (Jefferson Papers)
In the lifetime of mr Rittenhouse I communicated to him the description of the mouldboard of a...
2From Thomas Jefferson to Robert Patterson, 30 March 1798 (Jefferson Papers)
I am much obliged by your letter of yesterday. tho’ I possess Emerson’s fluxions at home, & it...
3From Thomas Jefferson to Robert Patterson, 31 March 1798 (Jefferson Papers)
I return you Emerson with thanks. it has suggested a qualification of the expression in my letter...
4From Thomas Jefferson to Robert Patterson, 10 December 1800 (Jefferson Papers)
The annual period for electing a President of the American Philosophical society being now...