1To Alexander Hamilton from David Rittenhouse, 20 June 1794 (Hamilton Papers)
On receiving yours of the 16th containing some french Coins I immediately put them into the hands...
2Enclosure: David Rittenhouse to Edmund Randolph, 22 May 1794 (Washington Papers)
An opportunity now offers of purchasing for the Mint about one Ton of wrought Copper, at the...
3To Thomas Jefferson from David Rittenhouse, 3 June 1793 (Jefferson Papers)
I was unwilling to ask a further Sum of money on account of the Mint until the Treasurer had...
4To Thomas Jefferson from David Rittenhouse, [10 April 1793] (Jefferson Papers)
Mr. Misho called on me Yesterday, he wishes to know whether he is to prepare for his journey, and...
5To Thomas Jefferson from David Rittenhouse, 25 March 1793 (Jefferson Papers)
I am again obliged to request you to make application to the President for a further Sum of money...
6Enclosure: Account of Expenditures for the Mint, [25 March 1793] (Jefferson Papers)
Account of Expenditures for the Purposes of The Mint of the United States Dolls. Cents For...
7To Thomas Jefferson from David Rittenhouse, 11 January 179[3] (Jefferson Papers)
Mrs. Rittenhouse is greatly obliged to you for your Valuable present. To me it is more acceptable...
8To Thomas Jefferson from David Rittenhouse, 7 January 1793 (Jefferson Papers)
I have herewith enclosed the result of our Assays &c. of the Coins of France, England, Spain, and...
9Enclosure: Assay of Foreign Coins, 7 January 1793 (Jefferson Papers)
In 24 Grains specific gravity In 24 Grains specific gravity Fine Gold Alloy Fine Gold Alloy Date...
10To Thomas Jefferson from David Rittenhouse, 29 December 1792 (Jefferson Papers)
I have inclosed four copies of a bill drawn by the Treasurer of the U.S. on Messrs. W. and J....
11David Rittenhouse to Tobias Lear, 27 December 1792 (Washington Papers)
We have begun to Assay some of the European Coins, and shall proceed tomorrow, at the Mint, if it...
12To Thomas Jefferson from David Rittenhouse, 28 November 1792 (Jefferson Papers)
By Act of Congress the Copper Coinage is limited to 150 Tons. This, counting the Ton to be 20...
13To Thomas Jefferson from David Rittenhouse, 27 November 1792 (Jefferson Papers)
The money granted by his Excellency the Presidents Warrant in July last being appropriated for...
14To Thomas Jefferson from David Rittenhouse, 16 June 1792 (Jefferson Papers)
I have bargained with the owner for the House and Lot on Seventh Street, between Arch and Market...
15To Thomas Jefferson from David Rittenhouse, 11 June 1792 (Jefferson Papers)
I have read over Mr. Keiths paper carefully, and endeavoured to make out his meaning. He has...
16To Thomas Jefferson from David Rittenhouse, [ca. 20 August 1791] (Jefferson Papers)
If we consider the same thing in the manner following we shall immediately perceive that the...
17To Thomas Jefferson from David Rittenhouse, 8 May 1791 (Jefferson Papers)
I thank you for a Sight of Mr. Randolph’s Letter. I must Confess I was pleased with Mr. Neville’s...
18To Thomas Jefferson from David Rittenhouse, 4 January 1791 (Jefferson Papers)
Under the Building lately erected by the Philosophical Society there are very large and deep...
19To Thomas Jefferson from David Rittenhouse, 2 July 1790 (Jefferson Papers)
I should not have troubled you with my Algebraical Calculations but for your present inconvenient...
20To Thomas Jefferson from David Rittenhouse, 25 June 1790 (Jefferson Papers)
Since my last letter (and not before) I have read Mr. Whitehursts Book on the Subject of...
21To Thomas Jefferson from David Rittenhouse, 21 June 1790 (Jefferson Papers)
I received yours of the 12th. 14th. and 17th. together with the several papers mentioned, to...
22To James Madison from David Rittenhouse, 19 January 1790 (Madison Papers)
I beg leave to recommend to your favorable notice Mr. Francis Bailey, printer, of this City, as a...
23To James Madison from David Rittenhouse, 10 July 1789 (Madison Papers)
Engaged as you are in business of the greatest importance as well as difficulty, and harrass’d by...
24To Thomas Jefferson from David Rittenhouse, 8 November 1788 (Jefferson Papers)
About two Months ago I received your very valuable present of Books, mentioned in the last letter...
25To Thomas Jefferson from David Rittenhouse, 14 April 1787 (Jefferson Papers)
About the latter end of June last I sent you the 2d. Vol. of our Transactions, directed to Mr....
26To Thomas Jefferson from David Rittenhouse, 26 June 1786 (Jefferson Papers)
Your favour of Jan. 25th. I received some time ago, and likewise all the Nautical Almanacs you...
27To Thomas Jefferson from David Rittenhouse, 28 September 1785 (Jefferson Papers)
That I have so long delayed acknowledging your favours has been owing to my absence from home....
28To Benjamin Franklin from David Rittenhouse, 31 December 1780 (Franklin Papers)
ALS : American Philosophical Society Amidst that Hurry of Business and want of Leisure, which is...
29To Benjamin Franklin from David Rittenhouse, 29 April 1780 (Franklin Papers)
ALS : American Philosophical Society Amidst the many important objects of your attention I doubt...
30Proceedings of Commissioners to Settle the Pennsylvania-Virginia Boundary, 27–31 August 1779 (Jefferson Papers)
Baltimore, 27–31 Aug. 1779 . After presenting their respective powers, the commissioners for...