1To Thomas Jefferson from Caspar Wistar, 4 June 1804 (Jefferson Papers)
I have the pleasure of inclosing Capt. Hand’s Receipt for the box Containing La Cepede’s work...
2From 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...