Baby being X-rayed. Doctor and nurse holding a baby in place to be X-rayed. The machinery and the series of pulleys are part of the X-ray machine. The device at centre left emits the X-rays, which will pass through the baby's soft tissues, leaving an image of bones and denser tissues exposed on a photographic plate behind the baby. Photographed in Provident Hospital, Illinois, Chicago, USA, in March 1942.