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In the early 1880s, surgeon William Henry Carmalt (at center with mustache) was photographed in the operating room on the top floor of the New Haven Hospital. Carmalt, professor of surgery from 1881 to 1929, graduated from Yale Scientific School in 1857, received his medical degree from the College of Physicians and Surgeons in New York in 1861 and studied abroad from 1870 to 1874. A pioneer in aseptic surgery, he was elected president of the Connecticut Medical Society in 1904 and president of the American Surgical Association in 1907.