Photos: Fire Prevention Week: Largest Loss Fires in U.S. History

Fire Prevention Week was was first proclaimed by President Calvin Coolidge in 1925 to commemorate the costly and deadly Great Chicago Fire which started on Oct. 8, 1871. Each year, the week is based on the period in which Oct. 9 falls.

In 2015, the National Fire Protection Association adjusted the dollar losses for the 25 largest loss fires in the U.S. The photos show the fire loss in the year fire occurred, followed by the 2015 loss estimate.