Dr. Hallberg: Century-old public health measures still relevant today

The Duluth Armory served as an emergency shelter during the massive wildfire that burned through Cloquet, Minn. and near Duluth in 1918, killing more than 400 people. Many people in the photo are wearing face masks to try to protect themselves from the Spanish flu epidemic.
Courtesy of Archives and Special Collections, Kathryn A. Martin Library, University of Minnesota Duluth
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