31To 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....
32Isaac Briggs to Thomas Jefferson, 15 May 1817 (Jefferson Papers)
I arrived here the day before yesterday—and I have this day received the appointment of surveyor...
33To Thomas Jefferson from Isaac Briggs, 18 May 1805 (Jefferson Papers)
By last mail, on the 11th. instant, I wrote to thee acknowledging the receipt of thy acceptable...
34To Thomas Jefferson from Isaac Briggs, 2 September 1804 (Jefferson Papers)
Attending to the necessary observations under the frequent interruption of clouds—keeping a...
35To 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...
36To Thomas Jefferson from Isaac Briggs, 2 January 1804 (Jefferson Papers)
Some time ago—very long after its date—the mail brought me thy favor of the 11th. of August. I...
37To Thomas Jefferson from Isaac Briggs, 26 November 1804 (Jefferson Papers)
I am just arrived here in safety and good health after a journey, of the unavoidable delays,...
38Isaac Briggs to Thomas Jefferson, 21 May 1817 (Jefferson Papers)
On the 15 or 16 instant I wrote to thee from New York , informing thee that I had received an...