1. Special Affections of the Tonsils in Diseases of the Throat;Cohen,1872
2. Removal of the Tonsils in Disease of the Nose and Throat;Thomson StC,1912
3. Diseases of the Nose, Throat and Ear;Ballenger,1911
4. The method of tonsillectomy by means of the alveolar eminence of the mandible and guillotine;Sluder;JAMA,1916
5. M. Hill, (2006) About the Carnegie Institute. http://embryology.med.unsw.edu.au/wwwhuman/Stages/carnegie.htm