1To Benjamin Franklin from Jan Ingenhousz, 20 August 1782 (Franklin Papers)
ALS : American Philosophical Society I Was very happy in recieving your lettre containing the...
2To Benjamin Franklin from Ingenhousz, 2 October 1782 (Franklin Papers)
ALS : American Philosophical Society I got at last an account of Pere Barletti’s pamphlet in an...
3To Benjamin Franklin from Ingenhousz, 27 November 1782 (Franklin Papers)
ALS : American Philosophical Society I have at last recieved the German American newspapers as...
4To Benjamin Franklin from Ingenhousz, 29 November 1782 (Franklin Papers)
ALS : American Philosophical Society Yesterday I was favoured with your kind lettre dated Nov....