21To Benjamin Franklin from David Hartley, 29 June 1779 (Franklin Papers)
ALS : American Philosophical Society; transcript: Library of Congress In the course of a...
22To Benjamin Franklin from David Hartley, 14 July 1778 (Franklin Papers)
ALS and incomplete copy: American Philosophical Society; transcript: Library of Congress I have...
23To Benjamin Franklin from David Hartley, 16 June 1778 (Franklin Papers)
ALS : American Philosophical Society Yours of June 5 per favour of Mr. Strange received relating...
24To Benjamin Franklin from David Hartley: Two Letters, 22 April 1779 (Franklin Papers)
(I) ALS : Archives du Ministère des affaires étrangères; transcript: Library of Congress; (II)...
25To Benjamin Franklin from David Hartley: Two Letters, 24 June 1779 (Franklin Papers)
(I) and (II) transcript: Library of Congress I shall hope soon to have an opportunity of writing...
26To Benjamin Franklin from David Hartley, 25 December 1777 (Franklin Papers)
Transcript: Library of Congress I thank you for your very friendly and prudent consideration of...
27To Benjamin Franklin from David Hartley, 3 May 1782 (Franklin Papers)
Transcripts: National Archives, Massachusetts Historical Society I write to you only one Line...
28To Benjamin Franklin from David Hartley, 4 February 1783 (Franklin Papers)
ALS : American Philosophical Society As I enclose this in the same cover as one from my Brother,...
29To Benjamin Franklin from David Hartley: Letter and Two Memoranda, 31 March 1783 (Franklin Papers)
(I) Copy: Massachusetts Historical Society; (II) copies: Massachusetts Historical Society, Public...
30To Benjamin Franklin from David Hartley: Two Letters, [4 October 1778] (Franklin Papers)
(I) ALS : American Philosophical Society; transcript: Library of Congress (II) ALS : American...