This square honors Archie C. Ketchum (1893-1920), a local Brooklyn native who worked in real estate with his father, volunteered for World War I, and served on the Board of Aldermen. Ketchum was raised on Kings Highway and West Eighth Street. He entered the real estate business with his father, Melvin Ketchum, but volunteered for service when the United States joined in World War I. A member of the 104th Field Artillery, Ketchum fell victim to gas warfare. Unable to return to duty, Ketchum was discharged and returned to his father’s Brooklyn real estate brokerage. In 1919, Ketchum was elected to the Board of Alderman (predecessor of the City Council), representing the Sixteenth Assembly District of Brooklyn, but only attended a few meetings before suffering a severe case of influenza, which led to emphysema. After suffering for three months, he died on April 18, 1920.