W. W. Keen (center) demonstrates surgical procedure to remove a tumor. He is assisted by J. C. DaCosta, standing to his right. A nurse, holding a basin, is seated at far right. Other persons identified in the photo are Joseph Hearn (Clinical Professor of Surgery, JMC 1867), Louis Borsch (JMC 1893), and Ward Brinton (JMC 1894).
8 x 5 in. ; mount 8.5 x 5.5 in.
Thomas Jefferson University