Click icons and colored areas in map above for additional details.

Icon	Description
	Aircraft Incident
	Hazardous Materials Incident
	Landmark Fire
	Large Civilian Loss
	Major Fire
	Multiple LODD
	Other
	Point of Interest

Key Dates

• October 4, 1834 – First recorded fire in Chicago at LaSalle and Lake.
• March 4, 1837 – City of Chicago incorporated.
• August 2, 1858 – First paid fire department organized.
• June 2, 1865 – First fire alarm boxes installed.
• October 2, 1871 – Chicago Fire Insurance Patrol organized, just six days before the Great Fire.
• May 9, 1878 – Joker telegraph system installed.
• June 29, 1889 – 125 square miles annexed by City of Chicago.