1To Benjamin Franklin from John Winthrop, 17 November 1761 (Franklin Papers)
Draft: American Philosophical Society I received your favor of 20 Feb. and 8 April last, the...
2To Benjamin Franklin from John Winthrop, 29 September 1762 (Franklin Papers)
MS not found; reprinted from Benjamin Franklin, Experiments and Observations on Electricity...
3To Benjamin Franklin from John Winthrop, 6 January 1768 (Franklin Papers)
Printed from extract in Benjamin Franklin, Experiments and Observations on Electricity, Made at...
4To Benjamin Franklin from John Winthrop: On Observing the Transit of Venus, 6 September 1769 (Franklin Papers)
AL (extract): The Royal Society The observations of the transit of Venus in 1761 had not...
5To Benjamin Franklin from John Winthrop, 26 October 1770 (Franklin Papers)
Reprinted from the Massachusetts Historical Society Proceedings , XV (1878), 12–13. I received...
6To Benjamin Franklin from John Winthrop, 4 March 1773 (Franklin Papers)
AL : American Philosophical Society I received your favor of Septr. 18. I return you many thanks...
7To Benjamin Franklin from John Winthrop, 31 December 1773: extract (Franklin Papers)
Extract: Library of Congress I concur perfectly with you in the Sentiments expressed in your...
8To Benjamin Franklin from John Winthrop, 28 March 1775 (Franklin Papers)
ALS : Massachusetts Historical Society I did my self the honor to write you, 13 Septr last, by...
9To Benjamin Franklin from John Winthrop, 28 February 1777 (Franklin Papers)
ALS : American Philosophical Society I do most sincerely congratulate you on your safe arrival in...