December 16, 1800 | Letter Thomas Jefferson to Caspar Wistar, December 16, 1800 Thomas Jefferson introduces Caspar Wistar to the work of William Dunbar, excited at the prospect of a scientific correspondent "on the very verge of the great terra incognita of our western continent."
Banner image: From the Collection of The New-York Historical Society. Accession number 1867.306.
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