Public domain
Performing autopsy on tularemia-infected guinea pigs. Water from suspected mountain streams had been injected into them. USPHS (United States Public Health Service) Rocky Mountain Laboratory, Hamilton, Montana
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit linePerforming autopsy on tularemia-infected guinea pigs. Water from suspected mountain streams had been injected into them. USPHS (United States Public Health Service) Rocky Mountain Laboratory, Hamilton. 1942-01-01. Vachon, John. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.