The history of the present comprehensive tuberculosis work in Chicago is closely interwoven with the history of the Chicago Tuberculosis Institute, which was organized in January, 1906. The Institute succeeded the Committee on Tuberculosis of the Visiting Nurses' Association (the pioneer Tuberculosis Committee in Chicago). The Chicago Tuberculosis Institute gives the following as its chief aim: "The collection and dissemination of exact knowledge in regard to the causes, prevention and cure of tuberculosis." The progress made in the tuberculosis situation of this city in the last seven years is directly due to the systematic campaign of the Institute. By exhibits, lectures, literature, stereopticon views and moving picture films, the Institute was energetically spreading during these years the knowledge concerning tuberculosis and its proper methods of prevention. In the winter of 1906-07 a small and unpretentious sanatorium called "Camp Norwood" was built on the grounds of the Cook County Institutions at Dunning, with a total capacity of 20 beds. The Edward Sanatorium at Naperville, made possible by the munificence of Mrs. Keith Spalding, was under construction at the same time and was later made a department of the Chicago Tuberculosis Institute. The Edward Sanatorium was the chief factor in demonstrating and convincing this community that tuberculosis can be successfully treated in our climate. In 1907, the Chicago Tuberculosis Institute established a system of dispensaries with a corps of attending physicians and nurses. The purpose was given as follows: (a) Early diagnosis of tuberculosis. (b) Control of tuberculosis by means of personal instruction and home visits. (c) Education of the community in the necessity of further development of the dispensary and nursing systems. (d) Spread of the gospel of fresh air and "right living." Dispensaries were opened during the latter part of 1907 as follows: (1) Jewish Aid Society Tuberculosis Clinic in existence since 1900; joined the Chicago Tuberculosis Institute, December 13th, 1907. (2) Olivet Dispensary, May 15, 1907; transferred to Policlinic in December of same year. (3) Central Free Dispensary at Rush Medical College, November 16th. (4) Northwestern Tuberculosis Dispensary, November 21st. (5) Hahnemann Tuberculosis Dispensary, December 9th. (6) Policlinic Tuberculosis Dispensary, December 13th. (7) West Side Dispensary at the College of Physicians and Surgeons, December 17th. The South West Dispensary was opened in August, 1909.