1To 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 obtained a Settlement of his Accounts at the Comptrollers Office, which is now done, to the 1st. of April last. This has obliged me to advance considerably for the Expenditures of the Mint, and I must request you to apply to the President for his Warrant for 5000 Dollars, in favour of the Mint. In...
2To 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 paying for the House and Lot for the Mint and for purchasing Copper, except 900 Dollars, And Considerable Expences having since arisen for Additional Buildings, Furnaces Horse-Mill and Machines of various kinds I find it necessary to apply for another warrant for the Sum of Five Thousand Dollars,...
3To 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 that instructions be prepared for him if he goes. This I hope you will do. Will it be proper to call a meeting of the Society , or shall we have a meeting of a few individuals who are interested in this business? He says 3 or 4 Hundred dollars put into his hands at present will be sufficient....
4To 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 to defray the Expences of the Mint (5000 Dolls. if he shall think proper) and have enclosed a concise Statement of the expenditure of sums heretofore granted, which you will be pleased to communicate to him. The accounts, as preparing by the Treasurer of the Mint for settlement to the end of this...
5To 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 Hundreds, neat Weight, will produce near 8 Millions of Cents, making no allowance for waste in Coining; and supposing the number of families in the United States to be 400,000 will be near 20 Cents to a family. This appears to me to be too great a proportion by more than one half, especially if we...
6Enclosure: 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 Grs. 32d Parts grs. 32d parts Date Grs. 32d parts Grs. 32d parts French Guineas }
7To 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 which I shall give as much attention, and as soon as my health will permit. In the mean time I thought it not amiss to transmit to you such observations as occurred to me on first reading them. I am not quite satisfied with the reasons given (page 1.) for having recourse to motion for a Standard of...
8To 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. Willink and Nicho. and Jac. Van Staphorst & Hubbard of Amsterdam for 24,750 current guilders equal to 10,000 Dollars, which you will please to transmit to Mr. Pinckney at London for the purpose of obtaining copper for the mint of the U.S. either from Sweden or elsewhere. The copper to be in sheets not...
9To 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 indeed expressed himself so very loosely that it is not easy to say what he intended. One thing however is clear, that he meant to depreciate the Rod-pendulum; and this he has done in a manner that does no credit to his Candour or Abilities. We have only his assertion, unsupported by any thing that can...
10To 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 Cellars. Suppose in the midst of one of them, another of 12 or 15 feet deep and 16 feet square was dug and walled and arched over would it not answer the purpose of which we were speaking. A considerable part of the Expence would be saved, and whatever reasonable compensation should be made to the...