51To Thomas Jefferson from Andrew Ellicott, 14 February 1804 (Jefferson Papers)
I ask pardon for not acknowledging the receipt of your two last letters before this:—the delay...
52To Thomas Jefferson from Andrew Ellicott, 6 October 1805 (Jefferson Papers)
I have lately received from the national institute of france the documents collected by order,...
53From Thomas Jefferson to Andrew Ellicott, 25 October 1805 (Jefferson Papers)
I have not seen the publication by the National institute of the documents proving the falling of...
54To Thomas Jefferson from Andrew Ellicott, 18 August 1806 (Jefferson Papers)
I have accompanied this with a copy of my observations on the eclipse of the sun on the 16th. of...
55To Thomas Jefferson from Andrew Ellicott, 20 October 1806 (Jefferson Papers)
I forwarded to you some time ago an account of the solar eclipse of the 16th. of June last:—I...
56From Thomas Jefferson to Andrew Ellicott, 1 November 1806 (Jefferson Papers)
Your letter of Aug. 18. with the account of the eclipse you were so kind as to inclose, found me...
57Andrew Ellicott to Thomas Jefferson, 3 June 1812 (Jefferson Papers)
I have just returned from determining the long disputed boundary between the states of Georgia ,...
58Thomas Jefferson to Andrew Ellicott, 24 June 1812 (Jefferson Papers)
I have duly recieved your favor of the 3 d & thank you in advance for that of a copy of your...