1To Benjamin Franklin from Penet, D’Acosta frères & Cie., 2 December 1779 (Franklin Papers)
LS : American Philosophical Society In great haste a few minutes before the Post sets off we have...
2To Benjamin Franklin from Penet, D’Acosta frères & Cie., 8 February 1780 (Franklin Papers)
LS : Historical Society of Pennsylvania May it please your Excellency, as we are ready to...