1To Thomas Jefferson from Isaac Briggs, 24 January 1801 (Jefferson Papers)
As a member of the American Philosophical Society I take the liberty of addressing its President....
2From Thomas Jefferson to Isaac Briggs, 8 February 1801 (Jefferson Papers)
I have to acknolege the reciept of your favor of Jan. 24. on the subject of the establishment of...
3To Thomas Jefferson from Isaac Briggs, 30 January 1802 (Jefferson Papers)
Will the President do me the favor to accept the enclosed pamphlet ; and the additional one to...
4To Thomas Jefferson from Isaac Briggs, 26 April 1802 (Jefferson Papers)
It was with a high degree of satisfaction, I observed in a letter I lately received from my...
5To Thomas Jefferson from Isaac Briggs, 26 June 1802 (Jefferson Papers)
Wilt thou condescend to inform me, if a letter I wrote, dated 26th. of the 4th. Month 1802, ever...
6From Thomas Jefferson to Isaac Briggs, 29 June 1802 (Jefferson Papers)
Your favor of the 26th. came to hand last night. that of Jan. 30. had been recieved in due time....
7To Thomas Jefferson from Isaac Briggs, 1 March 1803 (Jefferson Papers)
Agreeably to my promise , I have investigated thy Problem for finding the longitude by lunar...
8From Thomas Jefferson to Isaac Briggs, 5 March 1803 (Jefferson Papers)
I have something to propose to you much to your advantage: but it is necessary I should see you;...
9From Thomas Jefferson to Isaac Briggs, 20 April 1803 (Jefferson Papers)
The writer of the inclosed letter, James Dinsmore, is an excellent young man from Philadelphia,...
10To Thomas Jefferson from Isaac Briggs, 2 May 1803 (Jefferson Papers)
Thy letter, dated 20th. of April, I received yesterday. I have had several applications for...