21To Thomas Jefferson from Caspar Wistar, 15 January 1805 (Jefferson Papers)
Permit me to make known to you my Brother, Thos. Wistar , who is one of a very worthy and...
22To Thomas Jefferson from Caspar Wistar, 20 May 1805 (Jefferson Papers)
I presented your letter respecting the Roman Coin to the Society, & was requested to assure you...
23To Thomas Jefferson from Caspar Wistar, 20 January 1806 (Jefferson Papers)
I beg leave to inform you that the College of Physicians of Philada. have sent by the mail which...
24To Thomas Jefferson from Caspar Wistar, 26 July 1806 (Jefferson Papers)
I sincerely regret my omission respecting the head of the Mammoth, not only an account of the...
25To Thomas Jefferson from Caspar Wistar, 5 December 1806 (Jefferson Papers)
I beg leave to inclose a letter addressed to Dr Goforth, & to request that you would be pleased...
26To Thomas Jefferson from Caspar Wistar, 19 February 1807 (Jefferson Papers)
I fear that I am doing wrong by writing to you upon a subject with which I am not acquainted, but...
27To Thomas Jefferson from Caspar Wistar, 2 March 1807 (Jefferson Papers)
Please to accept my Sincere thanks for your kind communication of Feby. 25 last. I assure you...
28To James Madison from Caspar Wistar, 10 February 1808 (Madison Papers)
It is with great regret that I trespass upon your valuable time, but I cannot well avoid it in...
29To Thomas Jefferson from Caspar Wistar, 12 March 1808 (Jefferson Papers)
I assure you that I did not wait for a second invitation from you—The pleasure of Complying with...
30To Thomas Jefferson from Caspar Wistar, 18 April 1808 (Jefferson Papers)
If Congress should adjourn about the 25 Int. I am afraid that I shall not enjoy the pleasure of...