1To Benjamin Franklin from John MacMahon, 1 October 1777 (Franklin Papers)
ALS : American Philosophical Society I make bold to recommend to you the bearer, who is a...
2To Benjamin Franklin from John MacMahon, 19 December 1777 (Franklin Papers)
ALS : American Philosophical Society At my return here the day before yesterday, I found the...
3To Benjamin Franklin from John MacMahon, 4 January 1778 (Franklin Papers)
ALS : American Philosophical Society Chevalier De Keralio who had the pleasure of dining with you...
4To Benjamin Franklin from John MacMahon, 5 January 1778 (Franklin Papers)
ALS : American Philosophical Society Here is an invitation from the Dutchesses De Mortemart for...
5To Benjamin Franklin from John MacMahon, 9 January 1778 (Franklin Papers)
ALS : American Philosophical Society Here is another paper of news M. De Keralio, who gives you...
6To Benjamin Franklin from John MacMahon, 21 January 1778 (Franklin Papers)
ALS : American Philosophical Society I hope you have not forgot the promise you were so kind as...
7To Benjamin Franklin from John MacMahon, 22 March 1778 (Franklin Papers)
ALS : American Philosophical Society Give me leave to congratulate you upon the great and long...
8To Benjamin Franklin from John MacMahon and the Chevalier de Kéralio, 26 March 1781 (Franklin Papers)
AL : American Philosophical Society L’Excellent docteur Mac-mahon et Le chr. de Keralio...
9To Benjamin Franklin from John MacMahon: Prescription and Directions, [23–24 August 1782] (Franklin Papers)
(I) Press copy of ADS : Library of Congress; (II) ALS and press copy of ALS : Library of Congress...
10To Benjamin Franklin from John MacMahon: Prescription and Directions, 14 September 1782 (Franklin Papers)
(I) Press copy of ADS : Library of Congress; (II) ALS and press copy of ALS : Library of Congress...