1From Thomas Jefferson to David Rittenhouse, 19 July 1778 (Jefferson Papers)
I sincerely congratulate you on the recovery of Philadelphia, and wish it may be found uninjured...
2From Thomas Jefferson to David Rittenhouse, 11 November 1784 (Jefferson Papers)
The news of war inevitable in Europe will interest your philanthropy, otherwise it would scarcely...
3From Thomas Jefferson to David Rittenhouse, 25 January 1786 (Jefferson Papers)
Your favor of Sep. 28. came to hand a few days ago. I thank you for the details on the Southern...
4From Thomas Jefferson to David Rittenhouse, 18 September 1787 (Jefferson Papers)
I am now to acknolege the receipt of your favors of April 14. and June 26. as also of the 2d....
5From Thomas Jefferson to David Rittenhouse, 12 June 1790 (Jefferson Papers)
I know not what apology to make for the trouble I am about to give you. I am sure I must call...
6From Thomas Jefferson to David Rittenhouse, 1[5] June 1790 (Jefferson Papers)
I inclosed you, the day before yesterday a rough draught of the report I had prepared on the...
7From Thomas Jefferson to David Rittenhouse, 20 June 1790 (Jefferson Papers)
I inclosed you on the 17th. the alterations I had made in my report in consequence of the Bp. of...
8From Thomas Jefferson to David Rittenhouse, 26 June 1790 (Jefferson Papers)
Your favor of the 21st. came duly to hand, and I admit all your corrections with great...
9From Thomas Jefferson to David Rittenhouse, 30 June 1790 (Jefferson Papers)
Your favor of the 25th. came to hand last night, for which I give you many thanks. The conversion...
10From Thomas Jefferson to David Rittenhouse, 1 August 1790 (Jefferson Papers)
I do myself the honour of inclosing you a printed copy of the report on measures &c. You asked in...