1The American Commissioners to [the Conde de Sousa Coutinho], 26 April 1777 (Franklin Papers)
LS and draft: Library of Congress The Congress of the United States of America have seen a paper...
2To 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...
3From Benjamin Franklin to [the Conde de Sousa Coutinho], 7 June 1783 (Franklin Papers)
LS and transcript: Library of Congress I have perused carefully the Plan of a Treaty which your...
Copy and transcript: National Archives The initial negotiations for a commercial treaty between...
5To 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...
We have received the Extract of the letter from Monsieur de Sa of the 24 th Oct r 1784 which your...