Link 1: https://historyengine.richmond.edu/episodes/view/5282 Link 2: http://www.history.com/this-day-in-history/yellow-fever-breaks-out-in-philadelphia Link 3: https://faculty.humanities.uci.edu/bjbecker/PlaguesandPeople/week7ca.html Link 4: First 3 Paragraphs, Skim the rest http://www.eyewitnesstohistory.com/yellowfever.htm