1. Early attempts at expired air respiration, intubation and manual ventilation;Baker,1987
2. History and evolution of modern resuscitation techniques;Gordon,1966
3. De humani corporis fabrica libri septem;Vesalius,1543
4. The principles of thoracic anaesthesia;Mushin,1953
5. Fifty cases of croup in private practice treated by intubation of the larynx, with a description of the method and of the dangers incident thereto;O’Dwyer;Med Rec,1887