1Thomas Jefferson to Benjamin Silliman, 22 September 1819 (Jefferson Papers)
I am very thankful, Sir, for the honor conferred on me by the American Geological society , of...
2From James Madison to Benjamin Silliman, 28 March 1818 (Madison Papers)
I have received your letter of the instant, annexed to your prospectus of the Scientific Journal....
3From James Madison to Benjamin Silliman, 26 May 1820 (Madison Papers)
I owe many apologies for not sooner recollecting that I was a subscriber for the first year of...
4Thomas Jefferson to Benjamin Silliman, 11 April 1818 (Jefferson Papers)
The unlucky displacement of your letter of Mar. 3 . has been the cause of delay in my answer....