1To Benjamin Franklin from Thomas Percival, 16 May 1771 (Franklin Papers)
ALS : American Philosophical Society Though I have not the honour of being known to you, I take...
2To Benjamin Franklin from Thomas Percival, 21 June 1774 (Franklin Papers)
ALS : American Philosophical Society A few Weeks since I received a Packet of Papers on the...
3To Benjamin Franklin from Thomas Percival, 10 January 1775: résumé (Franklin Papers)
AL : American Philosophical Society <Manchester, January 10, 1775, a note in the third person:...
4To Benjamin Franklin from Thomas Percival, 12 May 1782 (Franklin Papers)
AL : American Philosophical Society Doctor Percival requests the honour of Doctor Franklin’s...
5To Benjamin Franklin from Thomas Percival, 4 December 1782 (Franklin Papers)
ALS : American Philosophical Society Messrs. James and Charles Hill, are the Sons of Mr. John...
6To Benjamin Franklin from Thomas Percival, 11 May 1784 (Franklin Papers)
ALS : American Philosophical Society I cannot omit the favourable opportunity, which the Tour of...