11To 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...
12From Thomas Jefferson to Isaac Briggs, 20 May 1803 (Jefferson Papers)
I thank you for your attention to the commission respecting the clock, and will immediately remit...
13From Thomas Jefferson to Isaac Briggs, 11 August 1803 (Jefferson Papers)
Mr. Fitch proposes to set out from hence for the Missisipi about the 1st. of October, and to go...
14To Thomas Jefferson from Isaac Briggs, 8 September 1803 (Jefferson Papers)
On the 12th. of the month just past, I arrived at Natchez;—on the day following I waited on...
15To Thomas Jefferson from Isaac Briggs, 2 January 1804 (Jefferson Papers)
Some time ago—very long after its date—the mail brought me thy favor of the 11th. of August. I...
16To Thomas Jefferson from Isaac Briggs, 27 February 1804 (Jefferson Papers)
I am here, with Robert Williams, on my way to the seat of Government. We expect to sail for...
17To 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...
18From Thomas Jefferson to Isaac Briggs, 5 June 1804 (Jefferson Papers)
The favor I meant to ask of you was to chuse me two thermometers descending as far below zero as...
19From Thomas Jefferson to Isaac Briggs, 11 June 1804 (Jefferson Papers)
I mentioned to Baron Humboldt my proposition for taking lunar observations at land without using...
20To Thomas Jefferson from Isaac Briggs, 2 September 1804 (Jefferson Papers)
Attending to the necessary observations under the frequent interruption of clouds—keeping a...