1From Benjamin Franklin to John Winthrop, 8 April 1761 (Franklin Papers)
ALS : American Philosophical Society I did myself the Honour of writing you a few Lines the 20th...
2From Benjamin Franklin to John Winthrop, 23 December 1762 (Franklin Papers)
MS not found; reprinted from American Autograph Shop, American Clipper (Merion Station, Pa.),...
3From Benjamin Franklin to John Winthrop, 10 July 1764 (Franklin Papers)
ALS : Harvard College Library I received your Favour of the 12th. past, and congratulate you on...
4From Benjamin Franklin to John Winthrop, 2 July 1768 (Franklin Papers)
Reprinted from William Temple Franklin, ed., Memoirs of the Life and Writings of Benjamin...
5From Benjamin Franklin to John Winthrop, 11 March 1769 (Franklin Papers)
ALS : American Philosophical Society At length after much Delay and Difficulty I have been able...
6From Benjamin Franklin to John Winthrop, 6 June 1770 (Franklin Papers)
ALS : Massachusetts Historical Society I find among my Papers a Letter of yours, dated Dec. 7....
7From Benjamin Franklin to John Winthrop, 5 February 1771 (Franklin Papers)
Reprinted from The Columbian Centinel , July 30, 1825. I duly received your favour of October 26,...
8From Benjamin Franklin to John Winthrop, 13 January 1772 (Franklin Papers)
ALS (letterbook draft): American Philosophical Society I have received by Mr. Marchant the 52 s....
9From Benjamin Franklin to John Winthrop, 25 July 1773 (Franklin Papers)
ALS (letterbook draft): Library of Congress I received your Favours of March 4 and April 19. Mr....