1Robert Walsh to Thomas Jefferson, 21 October 1817 (Jefferson Papers)
When I mentioned to you the Dissertation of Professor Playfair on the progress of Mathematical...
2Robert Walsh to Thomas Jefferson, 27 January 1818 (Jefferson Papers)
I thank you sincerely for the letter with which you have honoured me. I did not intend that the...
3Robert Walsh to Thomas Jefferson, 12 March 1818 (Jefferson Papers)
Your acceptable letter of the 19 th Ulto : and the tract of M r Tracy were received in due...
4Robert Walsh to Thomas Jefferson, 20 April 1818 (Jefferson Papers)
As there is now no likelihood of the resurrection of the American Register, & as I am about to...