Albert S. Lyons, President of Association begins, Alvin Gordon presides over the session. The theme is Mount Sinai landmark contributions to medicine. Moses Swick describes his role in developing intravenous urography. Arthur Morris Master describes early experiences in exercise electrocardiography and the two-step test. Samuel Rosen describes the development of the operation for the mobilization of the stapes. Leon Ginzburg describes the development of concepts on granulomatous disease, specifically Crohn's disease. Coleman Rabin describes his work on developing the concept of putrid lung abscess and its treatment.