Public domain
Dispensing yellow fever vaccine into ampules. 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 lineDispensing yellow fever vaccine into ampules. USPHS (United States Public Health Service) Rocky Mountain Laboratory, Hamilton, Montana. 1942-01-01. Vachon, John. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.