1To Benjamin Franklin from Sousa Coutinho, 19 July 1783 (Franklin Papers)
L : American Philosophical Society L’Ambassadeur de Portugal a l’honneur de faire part a Monsieur...
Copy and transcript: National Archives The initial negotiations for a commercial treaty between...
3To Benjamin Franklin from the Conde de Sousa Coutinho, 20 December 1782 (Franklin Papers)
L : Historical Society of Pennsylvania L’Ambassadeur de Portugal a l’honneur de faire ses...