41To 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...
42To 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....
43To 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....