THE "SILENT" PHONOGRAPH
Photo of an operation at the Brooklyn Eye and Ear Hospital.
Changing the record during a pause in the operation - never before published.
Published as an illustration from "Music Aids the Anesthetist" in the August 1933 Scientific American
[A. Frederick] Erdmann, M.D. (1867-1953), Anesthesiologist and American Society of Anesthesiologistss Founder. (unmasked and standing): "A patient under local anesthetic is calmed by music through ear-phones (far left). Scientific American, 1933. Erdmann fearlessly wrestled down combative patients to etherize them (left).
Courtesy ASA http://www.asahq.org