A fire at Our Lady of the Angels Catholic elementary school in Chicago's Humboldt park community results in the death of 92 children and 3 nuns. The oldest part of the building was built in 1910.
Due to a "grandfather clause" in the city's fire code, the building officially met safety standards, even though it did not have the safety features required of modern buildings at that time. Thousands of older school buildings were brought up to code in the year following the fire.