The image is a photograph of a blue plaque on a beige-colored wall. The plaque is circular in shape and has white text on it. The text reads "William H. Howell, Ph.D. 1860-1945" and "Discover of the anticoagulant heparin, First Professor of Physiology and Early Dean of Johns Hopkins School of Medicine, Second Director of the Hopkins School, of Hygiene and Public Health." The plaque appears to be located on the side of a building.