1Thomas 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....
2Enclosure: Thomas Jefferson’s Summary of Weather Observations, 1810–1816, [ca. 11 April 1818] (Jefferson Papers)
1. the greatest & least height of the thermometer every day. 2. the greatest, least, & mean...
3Thomas Jefferson to Nathaniel Bowditch, 11 April 1818 (Jefferson Papers)
I thank you for the copy of your Mathematical papers which you have been so kind as to send me. I...
4Thomas Jefferson to Thomas Cooper, 11 April 1818 (Jefferson Papers)
I wrote to you yesterday , since which it has occurred to me that you can render us a great...
5Thomas Jefferson to James Madison, 11 April 1818 (Jefferson Papers)
Yours of Mar. 29. came to duly to hand, but I put off answering it because I expected to have...
6Thomas Jefferson to Jacob Bigelow, 11 April 1818 (Jefferson Papers)
I thank you, Sir, for the comparative statement of the climate s of the several states, as...
7To James Madison from Thomas Jefferson, 11 April 1818 (Madison Papers)
Yours of Mar. 29. came duly to hand, but I put off answering it because I expected to have...