Public domain
Detroit, Michigan. New method of making x-ray photographs size 4x5 inches instead of larger, used at the Herman Kiefer Hospital for Communicable Diseases to show various stages of tuberculosis. X-ray operator with an electrical tube in use. This room is lined with lead and the operator looks through
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineDetroit, Michigan. New method of making x-ray photographs size 4x5 inches instead of larger, used at the Herman Kiefer Hospital for Communicable Diseases to show various stages of tuberculosis. X-ray . 1939-01-01. Siegel, Arthur S.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.