1To Thomas Jefferson from Andrew Ellicott, 10 October 1801 (Jefferson Papers)
I have enclosed the observations made by Mr. Patterson and myself on the lunar eclipse of...
2To James Madison from Andrew Ellicott, 12 January 1803 (Madison Papers)
I have enclosed a packet containing a number of astronomical observations for Mr. Delambre, one...
3To James Madison from Andrew Ellicott, 29 December 1801 (Madison Papers)
Some time ago I completed a map of the Mississippi, from the mouth of the Ohio, to the Gulf of...
4To Thomas Jefferson from Andrew Ellicott, 18 April 1803 (Jefferson Papers)
A few days ago I received a letter from Mr. John Vaughan from which the following is an extract,...
5To Thomas Jefferson from Andrew Ellicott, 11 May 1802 (Jefferson Papers)
This will be handed to you by Mr. Dinsmore , who was several years our Agent in the Cherokee...
6To Thomas Jefferson from Andrew Ellicott, 7 February 1802 (Jefferson Papers)
Your favour of the 29th. Ultimo has been duly received, and the proposition which it contains, I...
7To Thomas Jefferson from Andrew Ellicott, 14 February 1802 (Jefferson Papers)
If the following proposed arrangement, for executing the Office of Surveyor General of the United...
8To James Madison from Andrew Ellicott, 26 May 1802 (Madison Papers)
There are a few papers in your office, which accompanied my despatches from Natchez to the former...
9To Thomas Jefferson from Andrew Ellicott, 18 August 1801 (Jefferson Papers)
Immediately upon my return from the City of Washington I began the reduction of my Charts to a...
10To James Madison from Andrew Ellicott, 31 December 1801 (Abstract) (Madison Papers)
31 December 1801, Lancaster. Since writing the enclosed, has given the map to Duane who will...
11To Thomas Jefferson from Andrew Ellicott, 29 December 1801 (Jefferson Papers)
I have enclosed a few astronomical observations ; they are principally intended to determine by...
12To James Madison from Andrew Ellicott, 26 March 1802 (Abstract) (Madison Papers)
26 March 1802, Lancaster. “The bearer Moses Cotes has communicated to me his plan of an improved...
13To Thomas Jefferson from Andrew Ellicott, 6 March 1803 (Jefferson Papers)
Your agreeable favour of the 26th . Ult has been duly received, and the contents noted.—I shall...
14To 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...
15To James Madison from Andrew Ellicott, 15 July 1801 (Madison Papers)
Mr. Ellicott presents his most respectful compliments to his friend Mr. Madison, and requests,...
16To 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,...
17To Thomas Jefferson from Andrew Ellicott, 1 December 1803 (Jefferson Papers)
For some time past Mr. William Barton, and myself, have been objects of abuse in Mr. Duane’s...
18To Thomas Jefferson from Andrew Ellicott, 2 November 1801 (Jefferson Papers)
I have forwarded by the bearer Mr. Brown the notes to accompany the map which I informed you some...
19To James Madison from Andrew Ellicott, 10 January 1804 (Abstract) (Madison Papers)
10 January 1804, Lancaster. Encloses “a small packet for our Minister in France,” which he asks...
20To Thomas Jefferson from Andrew Ellicott, 19 December 1803 (Jefferson Papers)
A few days ago I received a letter from Mr. Livingston our Minister at Paris, which contains some...
21To 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...
22To James Madison from Andrew Ellicott, 24 November 1801 (Madison Papers)
Your favour of the 18th. has just come to hand, and the first leisure hour I have, shall be...
23To Thomas Jefferson from Andrew Ellicott, 16 May 1801 (Jefferson Papers)
No two branches of science have been so much improved the last two centuries as chemistry, and...
24To Thomas Jefferson from Andrew Ellicott, 11 May 1802 (Jefferson Papers)
I ask pardon for not furnishing you sooner with the method I use for calculating the rising and...
25Remarks on Observations with a Sextant, 18 April 1803 (Jefferson Papers)
By a practice of more than twenty years, I have constantly found water preferable to any other...
26To James Madison from Andrew Ellicott, 15 March 1802 (Madison Papers)
Your favour of the 8th. came to hand yesterday, and I have taken the earliest opportunity of...
27To Thomas Jefferson from Andrew Ellicott, 13 April 1801 (Jefferson Papers)
I have accompanied this by a few sheets of my observations, they contain an account of the work...
28Andrew Ellicott to Albert Gallatin, 27 December 1802 (Jefferson Papers)
I wish you to give me credit for the map , and observations that accompanied it , which I...
29To James Madison from Andrew Ellicott, 20 February 1802 (Madison Papers)
At the request of Mr. Delambre one of the Secretaries of the National Institute of France; I want...
30To Thomas Jefferson from Andrew Ellicott, 31 January 1802 (Jefferson Papers)
I have lately received some valuable astronomical observations, made at several places on the...