1From Thomas Jefferson to Pierre Samuel Du Pont de Nemours, 20 March 1801 (Jefferson Papers)
How many hard struggles, my dear friend, would it save me, had I really parted with my last vice...
2To Thomas Jefferson from Andrew Ellicott, 20 March 1801 (Jefferson Papers)
I have enclosed the first 12 pages of my astronomical observations :—you will perceive they are...