Originating with the idea of advancing clinical medicine and medical education, Dr. William Osler proposed the organization of a club in 1905, structured along the lines of the Surgical Club. With 24 charter members, 6 each from Boston, New York, Philadelphia, and Baltimore, the Interurban Clinical Club was formed in on April 28, 1905 for the purpose of stimulating the study of internal medicine, improving work and teaching methods, promoting disease investigation, and increasing the knowledge of clinical working techniques.
From the description of Interurban Clinical Club archives, 1905-1970. (National Library of Medicine). WorldCat record id: 14326094
From the guide to the Interurban Clinical Club Archives, 1905-1970, (History of Medicine Division. National Library of Medicine)