Books by John Boyd:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Boyd, John, active 1811-1827: Vegetable materia medica of the United States; or, Medical botany: containing a botanical, general, and medical history of medicinal plants indigenous to the United States. (H. C. Carey & I. Lea, 1818), also by William P. C. Barton, John G. Warnicke, and Vallance Tanner (page images at HathiTrust)
Find more by John Boyd at your library, or elsewhere.