A history of the variolous epidemic which occurred in Norwich in the year 1819 and destroyed 530 individuals; with an estimate of the protection afforded by vaccination, and a review of past and present opinions upon chicken-pox and modified smallpox / By John Cross [i.e. John Green Crosse].

Licence: Public Domain Mark

Credit: A history of the variolous epidemic which occurred in Norwich in the year 1819 and destroyed 530 individuals; with an estimate of the protection afforded by vaccination, and a review of past and present opinions upon chicken-pox and modified smallpox / By John Cross [i.e. John Green Crosse]. Source: Wellcome Collection.