Monticello Nov. 7. 19
I thank you, dear Sir, for the new edition of you Medical companion, rendered certainly more valuable by the ne[. . .] additions, and especially that of our domestic medicinal plants. when I was a boy there was in every house a small pamphlet written by old Dr Byrd of Westover, called “the poor planter: physician, or every man his own doctor.” that gave the list of our medicinal plants, and the diseases most common for which they were good and the processes and doses. I have not seen a copy of it for 50. year. except the one I possessed, bound up in a volume called the young man’s companion, which volume is now in the library of Congress—it would a valuable sheet or two as an Appendix to your book. the mineral medecines are much too dangerous to be used in a family but under the direction of a Physician. Accept my friendly & respectful salutations.
DLC: Papers of Thomas Jefferson.