"Influenza frequently complicated with pneumonia is prevalent at this time throughout America. This theatre is cooperating with the Department of Health. You must do the same. If you have a cold and are coughing and sneezing do not enter this theatre."
The highly contagious Spanish Flu had reached Philadelphia just before the Liberty Loan parade was held on Sept. 28, 1918. This parade, with its associated dense gatherings of people, contributed significantly to the massive outbreak of influenza which struck Philadelphia a few days later.