1From Benjamin Franklin to Ingenhousz, 24 December 1783 (Franklin Papers)
ALS : Yale University Library I am greatly indebted to you for Letters. I shall write largely to you soon. With this I send you some American Papers, more Letters to Sir Jos. Banks, A Letter to Mr Nairne on Thermometers, & some Catalogues of Seeds.— I have sent the Order to America for Seeds which your Friend desired, but I fear the Vessel I sent it by is lost, not being arriv’d the 6th of...
2From Benjamin Franklin to Ingenhousz, 16 January 1784 (Franklin Papers)
ALS : New York Public Library; copy: Library of Congress I have this Day received your Favour of the 2d Instant. Every Information in my Power respecting the Balloons I sent you just before Christmas, contain’d in Copies of my Letters to Sir Joseph Banks. There is no Secret in the Affair, and I make no doubt that a Person coming from you would easily obtain a Sight of the different Balloons of...
3From 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 written you a long Letter by the good Bishop, but cannot now accomplish it.— You will however have it very soon.— Fearing that the Seeds for your Friend might not arrive in time, to be planted this Spring, and having received a Box for some of my Acquaintance here, I sent a Part to you, to be dispos’d of...
4[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 Vienne. Inclosing Dr. Franklin’s letter. Count Merci.” Not found.]
5From 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 of Italy, has prevented my acknowleging earlier the receipt of your favor of Dec. 28. together with the pamphlet received through Barrois, for which I beg the author to accept my sincere thanks. Any letters or parcels from yourself to Doctr. Franklin, if you will do me the honor of addressing them...
6From 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 . The letter to Doctor Franklin, after which you enquire, came to my hands on the 9th. of October. I sent it under cover with my own dispatches to our Secretary for foreign affairs at New York, and the Count de Moutier , who went minister from this country to America, was the bearer of it . His...
7From 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 be forwarded to you. His commands will justify the liberty I take of accompanying them with a line, and with assurances of the satisfaction it affords me to do this to a person to whose researches the lovers of science are so much indebted. I have the honour to be with sentiments of the highest...