- I was shown an electric apparatus for locating bullets and shells, without X- ray treatment, I saw a badly wounded soldier undergoing the Carrel treatment. - "A Journey Through France in War Time", Joseph G. Butler, Jr..
- One was with Carrel; another was ill; another was at Chatillon, and so forth. - "The Ascent of the Matterhorn", Edward Whymper.
- For five years Dr. Carrel has been studying the subject, applying various extracts to wounded tissues. - "The Dream Doctor", Arthur B. Reeve.