31To Thomas Jefferson from John Vaughan, 8 May 1802 (Jefferson Papers)
Your favor enclosing D. Griffith on Longitude was recieved, & the acknowledgement for it is now...
32To Thomas Jefferson from John Vaughan, 8 June 1802 (Jefferson Papers)
A desire to be useful, induces me to make the present Communication, consisting of hints...
33To Thomas Jefferson from John Vaughan, 21 July 1802 (Jefferson Papers)
An uncertainty having arisen, whether the adress of Mr Brown was correct, I have taken the...
34To Thomas Jefferson from John Vaughan, 25 December 1802 (Jefferson Papers)
Under present circumstances I do not concieve myself authorised not to send you an extract of a...
35To Thomas Jefferson from John Vaughan, 31 December 1802 (Jefferson Papers)
I have just recieved the inclosed from M Dunbar, which I think it proper to forward to you...
36To Thomas Jefferson from John Vaughan, 15 March 1803 (Jefferson Papers)
The enclosed Accot. of a Method of preserving ship Bread from Weavils, I have extracted from...
37To Thomas Jefferson from John Vaughan, 28 April 1803 (Jefferson Papers)
Vaccination is becoming every day more current amongst us in order to assist in removing...
38To Thomas Jefferson from John Vaughan, 9 June 1803 (Jefferson Papers)
I enclose a letter recieved by a young friend of mine from the hands of the writer, to whom he...
39To Thomas Jefferson from John Vaughan, 25 June 1803 (Jefferson Papers)
I enclose you a letter from the Dutch Commercial Resident Heinekin—The Commn. alluded to is a...
40To Thomas Jefferson from John Vaughan, 23 July 1803 (Jefferson Papers)
The two pamphlets from the Society of Arts &c were intended to be retained by you, as we are in...