This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Morton Ether . Der Zahnarzt William Morton beim ersten Einsatz von ther als Ansthetikum am Oktober Gemlde von Ernest Board ca Illustrates the first use of ether as an anaesthetic in by the dental surgeon Morton wellcome ac uk ca Creator Ernest Board PDold PDold William Morton Ernest Board