Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
Two unusual cases of surgery of the trachea / by W.S. Jones and W.W. Keen. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.