1To Benjamin Franklin from Isaac Norris, 4 April 1757 (Franklin Papers)
Letterbook copy: Historical Society of Pennsylvania The interfering in those Weighty matters you...
2To Benjamin Franklin from Isaac Norris, 7 April 1757 (Franklin Papers)
Letterbook copy: Historical Society of Pennsylvania The Clerk calls upon me to sign the Indian...
3To Benjamin Franklin from Isaac Norris, 17 October 1757 (Franklin Papers)
ALS : American Philosophical Society; also letterbook copy: Historical Society of Pennsylvania I...
4To Benjamin Franklin from Isaac Norris, 24 November 1757 (Franklin Papers)
Letterbook copy: Historical Society of Pennsylvania The above is a Copy of my last. I have Since...
5To Benjamin Franklin from Isaac Norris, 21 February 1758 (Franklin Papers)
Letterbook copy: Historical Society of Pennsylvania Our old Inviterate Scribler has at length...