A comprehensive view of the small pox, cow pox, and chicken pox : with a concise history of their different stages and terminations, proving that the real small pox never have occurred more than once in the same person, nor ever after the cow pox / By James Sanders, M.D.

Licence: Public Domain Mark

Credit: A comprehensive view of the small pox, cow pox, and chicken pox : with a concise history of their different stages and terminations, proving that the real small pox never have occurred more than once in the same person, nor ever after the cow pox / By James Sanders, M.D. Source: Wellcome Collection.