1To Thomas Jefferson from Isaac Briggs, 9 February 1805 (Jefferson Papers)
My last letter to thee was dated at this place, 29th. of the month just past, a few days after my arrival here from New-Orleans. In that letter I ventured some hints on the political situation of this Territory. Having since acquired more certain knowledge of the subject, and more in detail, I think it my duty to communicate it to the President with that candor and simple truth which I have...
2To Thomas Jefferson from Isaac Briggs, 17 May 1803 (Jefferson Papers)
Permit me to introduce to thee my youngest brother, Joseph Briggs, who is going with me to the Mississippi Territory, and whom I mean to employ as a clerk. I enclose a copy of a letter which I wrote to thee from Philadelphia, lest the original should have miscarried. I must have misunderstood Henry Voight, or he must have deceived himself, in the probable time when my Transit Instrument would...
3To James Madison from Isaac Briggs, 1 January 1803 (Madison Papers)
Having failed, when I was last in the City of Washington, to procure satisfactory information, respecting what steps, if any, had been taken by the Agricultural Societies now existing in several parts of The United States towards the formation of an Annual Convention in which each might be represented, I take the liberty of soliciting thy assistance. My firm reliance on the purity of thy...
4To Thomas Jefferson from Isaac Briggs, 31 December 1804 (Jefferson Papers)
By last mail, I sent my report of the Post Road—by the present I send a duplicate. I have not yet recovered my health sufficiently to be able to ride; but the day after tomorrow if I continue to mend, although at the very slow rate I have done, I intend to make the attempt—and leave this place for the Mississippi Territory. By the Brigg Friendship, Captain Donne, I send addressed to thee, the...
5To Thomas Jefferson from Isaac Briggs, 22 December 1804 (Jefferson Papers)
Although still in state of convalescence, and but just able to attend to business a few minutes at a time, I am fortunate enough to have finished a map of my route from the City of Washington to this place. I send it in a tin case by the same mail with this letter. Several weeks ago it wanted but the labor of a few hours of health to complete it. Having written to thee (on the 26th. of last...
6To Thomas Jefferson from Isaac Briggs, 24 June 1808 (Jefferson Papers)
A few days since, I returned from the Eastward, where I had been viewing and examining in operation the various machinery for manufacturing cotton. Thy favor of the 12 ultimo came to Brookeville during my absence, and remained there until my return. This will account for my not sooner attending to thy request. I am so far from feeling it a trouble, that to have the power and opportunity of...
7To James Madison from Isaac Briggs, 11 October 1802 (Abstract) (Madison Papers)
11 October 1802, Baltimore. “I take the liberty of sending for deposit in thy office, as evidence of another invention of my brother Samuel, the enclosed Specification and affirmation. After fully submitting it to the test of experiment, he intends, if it succeeds, to solicit a patent.” Requests an acknowledgment of this letter “directed to Brookeville, Maryland.” Letterbook copy and copy of...
8To Thomas Jefferson from Isaac Briggs, 27 September 1806 (Jefferson Papers)
I have before me thy favor dated April 26. 06. Thy own benevolent heart can estimate more justly than I can describe the grateful feelings excited in my mind by thy generous offer of reimbursing from thy private purse my expenses in exploring the Post-route to New Orleans. Although even this sum would be very convenient to me; yet, if due to me at all, it is due from the general purse of my...
9To Thomas Jefferson from Isaac Briggs, 28 May 1804 (Jefferson Papers)
I had intended to be in the City this day—but my aged Father having come one hundred and thirty miles on a visit to me, and considering that two days delay would increase the probability of my meeting with the Secretary of the Treasury, I have ventured to remain at home until the day after tomorrow. On that day, I expect to be in the City. Accept my respectful esteem. RC ( DLC ); at foot of...
10To Thomas Jefferson from Isaac Briggs, 29 January 1805 (Jefferson Papers)
From New-orleans I sent by mail my report of the Post Road dated 22nd. of the 12th. mo. 1804, and by the next mail a duplicate, together with my account of expenses. On the 19th. instant I arrived here in good health. I avail myself of the first mail, to offer my ideas on the political situation of this Territory. The Legislature has been in session seven weeks, but owing to the political...