11To 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...
12To 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....
13To 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...
14To 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...
15David 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...
16To Benjamin Franklin from David Rittenhouse, 29 April 1780 (Franklin Papers)
ALS : American Philosophical Society Amidst the many important objects of your attention I doubt...
17To 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...
18To 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...
19To 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...
20To 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...