1To Benjamin Franklin from Thomas Ruston, 9 September 1780: résumé (Franklin Papers)
Translation: American Philosophical Society <London, September 9, 1780, in French: The world...
2To Benjamin Franklin from Thomas Ruston, 29 September 1780 (Franklin Papers)
ALS : American Philosophical Society The most profound secrecy is studied with respect to the...
3To Benjamin Franklin from Thomas Ruston: Two Letters, 2 May 1782 (Franklin Papers)
(I) ALS : American Philosophical Society; AL (draft): New-York Historical Society; copy:...