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3 illustrations
In March 1907, sanitary engineer George Soper confronted Mary Mallon at a Manhattan townhouse with an alarming claim: she was spreading typhoid fever to every...
In the winter of 1906, sanitary engineer George Soper was hired to investigate a puzzling typhoid outbreak at a rented summer home in Oyster Bay,...
In the summer of 1906, six members of the Charles Henry Warren family fell ill with typhoid fever in their rented home in Oyster Bay,...