This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

A part of the Duke Medical Center Library History of Medicine Ephemera Collection.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.