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Poster distributed by Rennsselaer County Tuberculosis Association, Troy, New York, 1918
Source: National Library of Medicine. Images from the history of medicine cited 2010 Feb 24]. Available from: URL: http://ihm.nlm.nih.gov/luna/servlet/detail/NLMNLM˜1˜1˜101449540˜157889:Prevent-disease?qvq=q:influenza;lc:NLMNLM˜1˜1&mi=55&trs=59
