Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
A prospect of exterminating the small-pox; being the history of the variolae vaccinae, or kine-pox, commonly called the cow-pox; as it has appeared in England / with an account of a series of inoculations performed for the kine-pox, in Massachusetts. By Benjamin Waterhouse. Public Domain Mark. Source: Wellcome Collection.