1From John Adams to John Pickering, 29 January 1819 (Adams Papers)
I am ashamed to have delayed so long and at last to be obliged to Borrow a hand to acknowledge...
2Thomas Jefferson to John Pickering, 22 September 1819 (Jefferson Papers)
Th: Jefferson presents his compliments & his thanks to mr Pickering for the copy he has been so...
3Thomas Jefferson to John Pickering, 13 February 1822 (Jefferson Papers)
I thank you, Sir, for your essay proposing an uniform orthography for the Indian languages. it...
4From Thomas Jefferson to John Pickering, 26 February 1823 (Jefferson Papers)
I thank you, Sir, for your treatise on the Indian languages, and rejoice to see them thought...
5From Thomas Jefferson to John Pickering, 20 February 1825 (Jefferson Papers)
I thank you for the copy of your Cherokee grammar, which I have gone over with attention and...
6From Thomas Jefferson to John Pickering, 27 October 1825 (Jefferson Papers)
I have to thank you for your favor of the 10 th inst. and the two pamphlets accompanying it on...