An account of the yellow or malignant fever : as it occurred in the city of Philadelphia in 1820 Jackson, Samuel, 1787-1872. Yellow Fever -- epidemiology Epidemics Philadelphia : M. Carey & Sons, 1821 Text 116 p. nlm:nlmuid-65030030R-bk 65030030R http://resource.nlm.nih.gov/65030030R LCCN: 7-28822 English Philadelphia -- epidemiology The National Library of Medicine believes this item to be in the public domain : https://creativecommons.org/publicdomain/mark/1.0/