Unsung Hero

Kenneth Larson (Letters, May 6) wrote that the typhus shot given him in World War II before he left for action in France and Belgium (and later incarceration as a prisoner of war) saved him from the fate of Anne Frank, who died of typhus fever in a concentration camp 20 miles from where Larson was being held.

Times readers may find it of interest to learn that the typhus vaccine administered during the war to 15 million Allied troops was developed by a young government researcher who later achieved great success as seventh president of USC (1958-70): Norman Topping, MD

GORDON COHN

Long Beach