1From Benjamin Franklin to Ingenhousz, 4[–5] May 1779 (Franklin Papers)
LS : American Philosophical Society I received your kind Letter of last Month, and I forwarded...
2From Benjamin Franklin to Dumas, 4 May 1779 (Franklin Papers)
Copy: Library of Congress I take this opportunity by Col. Hope of sending you some Papers , which...
3From Benjamin Franklin to David Hartley, 4 May 1779 (Franklin Papers)
Copy and transcript: Library of Congress; copy: Archives du Ministère des affaires étrangères I...
4From Benjamin Franklin to Richard Bennett Lloyd, 4 May 1779 (Franklin Papers)
Copy: Library of Congress I received the letter you did me the Honour to write me of the 10th....
5From Benjamin Franklin to Rudolph Erich Raspe, 4 May 1779 (Franklin Papers)
Copy: Library of Congress I received the letter you did me the honour to write by Messrs. Waitz &...
6From Benjamin Franklin to Thomas Viny, 4 May 1779 (Franklin Papers)
ALS (draft) and two copies: Library of Congress I received with great Pleasure your kind Letter,...
7From Benjamin Franklin to Patience Wright, 4 May 1779 (Franklin Papers)
ALS (draft) and copy: Library of Congress I received your Favour of the 14th of March past, and...