1Peter S. Du Ponceau to Thomas Jefferson, 14 November 1815 (Jefferson Papers)
It is a duty no less pleasing than honorable to me, to address you on behalf of the Historical & literary Committee of the American Philosophical Society , in the Capacity of their Corresponding Secretary. You have, no doubt, been informed of the recent establishment of this Committee, & of the views & objects for which it has been instituted. If not, you will receive full information on the...
2Thomas Jefferson to Peter S. Du Ponceau, 22 January 1816 (Jefferson Papers)
I have been 4. of the last 5. months absent from home, which must apologise for this very tardy acknolegement of your favor of Nov. 14. I learn with much satisfaction the enlargement by the Philosophical society of the scope of their institution, by the establishment of a standing committee for History, the moral sciences and general literature. I have always thought that we were too much...
3Peter S. Du Ponceau to Thomas Jefferson, 8 February 1816 (Jefferson Papers)
The letter which you did me the honor to write to me on the 22 d ult o was duly laid before the Philosophical Society & the Historical Committee at their Successive meetings. The Committee met last night, & I have it in charge to return you thanks in their name for the very acceptable present of M r Hawkins ’s Sketch of the Creek Country, & the generous offer which you have made of Such other...
4Thomas Jefferson to Peter S. Du Ponceau, 26 January 1817 (Jefferson Papers)
I promised you in my letter of Jan. 22. 16. to make enquiry on the subject of the MS. journal of the boundary between Virginia and North Carolina , run in 1728. of which you have a defective transcript. I have since been able to obtain the original for perusal, and now have it in my possession. I call it original , because it is that which has been preserved in the Westover family, having...
5Peter S. Du Ponceau to Thomas Jefferson, 17 February 1817 (Jefferson Papers)
I have received the letter which you have done me the honor to write to me on the 26 th ult o . It would have done great pleasure to the Historical Committee to have contributed to the restoration of the interesting MS. of which your letter gives an account; but the one in their possession, and which, by their order, I have the honor to enclose, is entirely different from that which you...
6Thomas Jefferson to Peter S. Du Ponceau, 6 November 1817 (Jefferson Papers)
The long delay of the MS. of Col o Byrd which you were so kind as to send me , needs apology. on the 26 th of June I wrote to mr Benjamin Harrison of Berkley from whom the other had been borrowed, to ask permission to send it to the Philosophical society with a view to it’s publication. the following is an extract from his answer of July 11.
7Thomas Jefferson to Peter S. Du Ponceau, 7 November 1817 (Jefferson Papers)
A part of the information of which the expedition of Lewis and Clarke was the object has been communicated to the world by the publication of their journal; but much & valuable matter remains yet uncommunicated. the correction of the longitudes of their map is essential to it’s value; to which purpose their observations of the Lunar distances are to be calculated & applied. the new subjects...
8Thomas Jefferson to Peter S. Du Ponceau, 7 November 1817 (Jefferson Papers)
Th: Jefferson presents his compliments to M r Duponceau , & his thanks for his pamphlet on Phonology. he supposes, with him, that all sud d en reformation of our orthography is as desperate as it would be inconvenient. he presumes the slow process of amendment will continue, which has been going on for ages; that this may in time reduce the power of the letters to greater uniformity, as has...
9Peter S. Du Ponceau to Thomas Jefferson, 5 December 1817 (Jefferson Papers)
The two letters which you have done me the honor to write to me, dated the 6 th & 7 th ultimo , have been laid by me before the Historical Committee of the Philosophical Society , together with the valuable Manuscripts which accompanied them. They have directed me to return you their warm thanks for these fresh instances of your enlightened & unwearied Zeal in the Cause of Science &...
10Peter S. Du Ponceau to Thomas Jefferson, 11 December 1817 (Jefferson Papers)
In the last letter which I had the honor of writing to you, I omitted to return you thanks in the name of the Historical Committee for the very interesting MSS. which you had the goodness to forward to them on the Subject of opening the Isthmus of Darien . They are fully Sensible of its value & importance, & beg leave to tender you their thanks, with the assurance that your injunction on the...