1[From Thomas Jefferson to Jan Ingenhousz, 14 July 1785] (Jefferson Papers)
[ Paris, 14 July 1785. Entry in SJL reads: “Monsr. Ingenhausz medecin de la cour & c. & c. à...
2From Benjamin Franklin to Jan Ingenhousz, 23 April 1784 (Franklin Papers)
ALS : Myron Kaller & Associates, Inc., Asbury Park, New Jersey (1989) I did intend to have...
3From Benjamin Franklin to Jan Ingenhousz, 26 April 1777 (Franklin Papers)
ALS : Henry Huntington Library I find by your Favour of the 2d Inst. that my Letter to you had...
4From Thomas Jefferson to Jan Ingenhousz, 9 July 1787 (Jefferson Papers)
An absence of three or four months on a journey through the Southern parts of France and Northern...
5From Thomas Jefferson to Jan Ingenhousz, 19 June 1788 (Jefferson Papers)
I am late in answering your favor of Jan. 23. but it has not been possible for me to do it sooner...
6From Thomas Jefferson to Jan Ingenhousz, 14 July 1785 (Jefferson Papers)
Doctor Franklin left us two days ago. On his departure he charged me with the inclosed packet to...
7From Benjamin Franklin to Jan Ingenhousz, 12 February[–6 March 1777] (Franklin Papers)
ALS : Yale University Library; incomplete draft and copy: Library of Congress I received your...
8From Benjamin Franklin to Jan Ingenhousz, 30 September 1773 (Franklin Papers)
ALS (letterbook draft): American Philosophical Society I rejoic’d as much as any Friend could do,...
9From Benjamin Franklin to Jan Ingenhousz, 16 May 1783 (Franklin Papers)
LS and incomplete AL (draft): Library of Congress I have before me your three Favours of Feby....
10From Benjamin Franklin to Jan Ingenhousz, 18 March 1774 (Franklin Papers)
ALS : Harvard University Library I have lately been favoured with yours of the 24th past. I am...