1To John Adams from Peter Stephen Duponceau, 28 June 1819 (Adams Papers)
I feel exceedingly honored as well as gratified by your kind notice of my humble labours. Your...
2To Thomas Jefferson from Peter Stephen Duponceau, 19 May 1825 (Jefferson Papers)
Count Charles Vidûn, of Turin, who will have the honor of delivering you this Letter is one of...
3To John Adams from Peter Stephen Duponceau, 12 July 1819 (Adams Papers)
I am honoured with your letter of the 5th. inst. If you have felt pleasure in recognizing in me...
4To John Adams from Peter Stephen Duponceau, 19 April 1821 (Adams Papers)
The honor you have done me by noticing my weak productions & encouraging my endeavours to be...
5To Thomas Jefferson from Peter Stephen Duponceau, 5 November 1825 (Jefferson Papers)
By order of the Board of Directors of the Society for the Commemoration of the landing of William...
6Peter S. Du Ponceau to Thomas Jefferson, 5 January 1818 (Jefferson Papers)
I do myself at present the honor merely to acknowledge the receipt of your Letter of the 30 th...
7Peter S. Du Ponceau to Thomas Jefferson, 23 March 1821 (Jefferson Papers)
I had the honor some time ago of introducing to you M r L. C. Vanuxem , a young American...
8Enclosure: Peter S. Du Ponceau’s Comparison of Indian Numerals, [ca. 12 July 1820] (Jefferson Papers)
Indian Numerals The Onondago is taken from Zeisberger’s Grammar The Mohawk from Luther’s...
9Peter S. Du Ponceau to Thomas Jefferson, 9 June 1818 (Jefferson Papers)
I have the honor of enclosing to you the Prospectus of the first Volume of our Historical...
10Peter S. Du Ponceau to Thomas Jefferson, 1 March 1819 (Jefferson Papers)
I am ordered by the Historical Committee to inform you that they have caused to be transmitted to...