1Enclosure: Caspar Wistar’s Statement on Yellow Fever, 15 December 1805 (Jefferson Papers)
Statement of facts tending to prove the contagious nature of the yellow fever, at Germantown , in the year 1798. by C. Wistar M.D. Professor of Anatomy in the University of Pensylvania E t c The disease which produced the fatal effects now to be related, commence d in the family of Elizabeth Johnson , widow who lived in the main Street of the village of Germantown , about six and a half miles...