Presidential address.
D000047:Academies and Institutes / Q000266:history; D004501:Education, Medical; D005085:Exhibitions as Topic; D049672:History, 19th Century; D049673:History, 20th Century; D008511:Medicine; D009885:Ophthalmology / Q000193:education / Q000266:history; D010036:Otolaryngology / Q000193:education / Q000266:history; D013038:Specialization; D014481:United States