1To Benjamin Franklin from Francis Coffyn, 16 April 1784 (Franklin Papers)
ALS : American Philosophical Society I had the honnor to address your Excellency on the 6th....
2To Benjamin Franklin from Francis Coffyn, 11 October 1783 (Franklin Papers)
ALS : American Philosophical Society I had the honnor of addressing your Excellency on the 15....
3To Benjamin Franklin from Francis Coffyn, 24 April 1783 (Franklin Papers)
ALS : American Philosophical Society I had the honnor to address your Excellency by my last...
4To Benjamin Franklin from Francis Coffyn, 11 April 1783 (Franklin Papers)
ALS : American Philosophical Society Since the letter I had the honnor to write your Excellency...
5To Benjamin Franklin from Francis Coffyn, 9 January 1783 (Franklin Papers)
ALS : American Philosophical Society J’ai l’honneur de vous ecrire la presente laquelle vous Sera...
6To Benjamin Franklin from Francis Coffyn, 21 August 1782 (Franklin Papers)
ALS : American Philosophical Society J’ai l’honneur de vous ecrire la presente, laquelle vous...
7To Benjamin Franklin from Francis Coffyn, 16 May 1782 (Franklin Papers)
ALS : University of Pennsylvania Library J’ai l’honneur de vous ecrire la presente laquelle vous...
8To Benjamin Franklin from Francis Coffyn, 23 April 1782 (Franklin Papers)
ALS : American Philosophical Society J’ai l’honneur de vous ecrire la presente, laquelle vous...
9To Benjamin Franklin from Francis Coffyn, 21 April 1782 (Franklin Papers)
ALS : American Philosophical Society J’ai l’honneur de vous écrire la presente qui vous sera...
10To Benjamin Franklin from Francis Coffyn, 16 March 1782 (Franklin Papers)
ALS : American Philosophical Society J’ai l’honneur de vous ecrire la presente qui vous sera...