Click2Disasters: The Great Fire
- With hundreds of primary sources, relates how the great Chicago fire of 1871 raged while deadly fires also burned in Peshtigo, Wisconsin and central Michigan.
- http://www.click2disasters.com/great_fire/great_fire_ch1.htm

The Great Chicago Fire and the Web of Memory
- Photographs and sketches, essays and eyewitness accounts of the October 9, 1871 fire that killed over 300 persons and destroyed much of the city.
- http://www.chicagohs.org/fire/index.html

Did The Cow Do It?
- Investigates the cause of the Great Chicago Fire, formerly blamed on a cow thought to have kicked over a lantern in Mrs. O'Leary's barn.
- http://www.thechicagofire.com/

The Great Chicago Fire
- A bird's-eye view of pre-fire Chicago describes Chicago up to the eve of the fire; section entitled "The Great Conflagration" examines the calamity itself.
- http://www.chicagohs.org/fire/intro/gcf-index.html