global influenza pandemic Spanish Influenza in North America, 1918–1919 http://ocp.hul.harvard.edu/contagion/influenza.html Harvard | 'Contagion' The Spanish Flu and Armistice Spanish Influenza in North America, 1918-1919 http://ocp.hul.harvard.edu/contagion/influenza.html Spanish Influenza in North America, 1918–1919 moved through the United States in waves Spanish Influenza in North America, 1918-1919 Spanish Influenza in North America, 1918-1919 Spanish Influenza in North America, 1918–1919 Harvard | 'Contagion' traveled with World War I Spanish Influenza in North America, 1918–1919 Spanish Influenza in North America, 1918–1919 Spanish Influenza in North America, 1918–1919