1From Thomas Jefferson to Antonio Garcia Herreros, 18 August 1805 (Jefferson Papers)
The discovery which your letter of the 9th. announced of a method of curing Yellow fever is certainly highly interesting to those countries wherein it has occasionally prevailed. in the distribution of the powers of government however, made by our general & state constitutions, no other encoragement for useful discoveries has been confided to the general government but that of securing to...