1To Thomas Jefferson from John Allen, 28 September 1802 (Jefferson Papers)
By hard Study, close applycation and long experiance I have found out a Successfull method of cure for that dreadfull disorder that cruel scorge to mankind the yelow fever. In a great number of cases in which I have used it, it has been successfull. I verily believe that it will if applied be Successfull in any part of the world. I am well aware that the disorder has baffled the united...