1To Benjamin Franklin from Martin Howard, 16 November 1764 (Franklin Papers)
ALS : American Philosophical Society I learnt a few Days ago by the Pennsylvania Gazette that you...
2To Benjamin Franklin from Martin Howard, Junior, 14 May 1765 (Franklin Papers)
ALS : American Philosophical Society I had the Honour to write you some time past and mentioned...
3To Benjamin Franklin from Martin Howard, 12 August 1775 (Franklin Papers)
ALS : American Philosophical Society I recieved your favour by Mr. Caswel. When I wrote and...