Sidney Farber (September 30, 1903 – March 30, 1973) was an American pediatric pathologist. He is regarded as the father of modern chemotherapy for his work using folic acid antagonists to combat leukemia, which led to the development of other chemotherapeutic agents against other malignancies. Farber was also active in cancer research advocacy and fundraising, most notably through his establishment of the Jimmy Fund, a foundation dedicated to pediatric research in childhood cancers. The Dana–Farber Cancer Institute is named after him. Early life He was born in Buffalo, New York, to Jewish parents Simon and Matilda (Goldstein) Farber. He was the third of 14 children. He was the younger brother of the noted philosopher and University of Buffalo professor Marvin Farber (1901–1980). Farber graduated from University at Buffalo, The State University of New York, or SUNY Buffalo, in 1923. Farber Hall, built in 1953 on the South Campus of SUNY Buffalo, is named for him. In the mid-1920s, Jewish students were often refused admission to US medical schools, prompting him to go to Europe. As Farber was fluent in German, he undertook his first year of medical school at the Universities of Heidelberg and Freiburg in Germany. Having excelled in Germany, Farber entered Harvard Medical School as a second-year student and graduated in 1927. Farber pursued postgraduate training in pathology at Peter Bent Brigham Hospital (the predecessor of Brigham and Women's Hospital) in Boston, Massachusetts, where he was mentored by Kenneth Blackfan, and was appointed to a resident pathologist post at Children's Hospital in 1929. Career Following postgraduate training, Farber became an Instructor in Pathology at Harvard Medical School in 1929. That same year, he was also appointed the first full-time pathologist to be based at Children's Hospital, where he became a close mentee and friend of pathologist Simeon Burt Wolbach. Farber was an extremely meticulous and precise scientist, and his laboratory become known for its tidiness. In 1946, Farber was named Chairman of the Staff at the Children's Hospital, where he managed the Medical Center of Children's and envisioned an Institute for Pediatric Pathology which now exists as the Pediatric Research building. Farber was appointed Pathologist-in-Chief of the Children's Hospital in 1947 and Professor of Pathology at Harvard Medical School in 1948. Throughout his career, Farber published more than 270 books and research papers on pediatric pathology, autopsy, and the history of medicine. Many remain classic references today, such