11From Benjamin Franklin to Samuel Cooper, 22 April 1779 (Franklin Papers)
ALS (draft) and copy: Library of Congress I received your valuable Letter by the Marquis de la...
12From Benjamin Franklin to Samuel Cooper, 9 December 1780 (Franklin Papers)
Press copy: American Philosophical Society; copy: Library of Congress Since mine of the 2...
13From Benjamin Franklin to Samuel Cooper, 26 December 1782 (Franklin Papers)
Copy: Archives du Ministère des affaires étrangères; extract: Library of Congress I have received...
14From Benjamin Franklin to Samuel Cooper, 15 May 1781 (Franklin Papers)
Press copy: American Philosophical Society; AL (draft): Library of Congress I received your kind...
15From Benjamin Franklin to [Samuel Cooper], 27 February 1778 (Franklin Papers)
Copy: University of California Library, Berkeley; transcript: Massachusetts Historical Society At...