11Peter 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...
12To 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...
13To 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...
14Peter S. Du Ponceau to Thomas Jefferson, 12 July 1820 (Jefferson Papers)
I have received the letter you have done me the honor to write to me dated the 7 th inst....
15Enclosure: 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...
16Peter S. Du Ponceau to Thomas Jefferson, 13 July 1820 (Jefferson Papers)
M r Du Ponceau has the honor of enclosing to M r Jefferson , a Short Comparative Vocabulary of...
17Enclosure: Peter S. Du Ponceau’s Comparison of the Nottoway and Iroquois Languages, [ca. 13 July 1820] (Jefferson Papers)
Affinities of the Nottoway language with the Iroquois Dialects Nottoway Nottoway The Sun Aheeta ,...
18Peter S. Du Ponceau to Thomas Jefferson, 18 July 1820 (Jefferson Papers)
I hope I shall not be considered intrusive in communicating to you the Substance of the answer I...
19Peter S. Du Ponceau to Thomas Jefferson, 12 September 1820 (Jefferson Papers)
The Vocabulary of the Nottoway language which you have had the goodness to send to me , has only...
20Peter S. Du Ponceau to Thomas Jefferson, 9 October 1820 (Jefferson Papers)
I take the liberty of introducing to you in the person of M r L. C. Vanuxem , the bearer hereof,...