Doctors work on other cures at the Walter Reed Hospital, named after the pathologist who proved the mosquito spread yellow fever

CREDIT: Horydczak, Theodor, photographer. "International Nickel Co. at Walter Reed Hospital. Medical Staff at Work IX, Walter Reed Hospital." Circa 1920-1950. Washington as It Was: Photographs by Theodor Horydczak, 1923-1959, American Memory collections, Library of Congress.