41To Benjamin Franklin from Isaac Norris, 19 August 1761 (Franklin Papers)
ALS : American Philosophical Society; letterbook copy: Historical Society of Pennsylvania Your...
42To Benjamin Franklin from Isaac Norris, 30 September 1761 (Franklin Papers)
Duplicate: American Philosophical Society; letterbook copy: Historical Society of Pennsylvania A...
43To Benjamin Franklin from Isaac Norris, 19 October 1761 (Franklin Papers)
Letterbook copy: Historical Society of Pennsylvania I find my Last of the 30th of September mist...
44To Benjamin Franklin from Isaac Norris, 4 November 1761 (Franklin Papers)
Letterbook copy: Historical Society of Pennsylvania I sent by Captain Hervey bound to Hollyhead...
45To Benjamin Franklin from Isaac Norris, 16 November 1761 (Franklin Papers)
Letterbook copy: Historical Society of Pennsylvania Benja. Franklin By Captn. Bradford } Infra...
46Province of Pennsylvania: Account with Franklin; Isaac Norris: Certificate for Payment, 4 March 1763 (Franklin Papers)
I. DS : Historical Society of Pennsylvania. II. Printed form with MS . insertions in blanks:...
47To Benjamin Franklin from Isaac Norris, 18 May 1765 (Franklin Papers)
ALS : American Philosophical Society; letterbook copy: Historical Society of Pennsylvania I...