1To Thomas Jefferson from Samuel Hawkins, 3 November 1808 (Jefferson Papers)
With this the Post Master General will do me the honor to present to you a Cane. The horn or tooth, apparently in its natural State, and without any garniture, was sent to me in Paris by a friend in London, who informed me that it was the horn of the Sea-Unicorn. There is a hole through its centre from which the marrow has evidently been extracted. At its upper or larger end, the aperture is...