Pinterest Facebook Twitter Email Did a Cow Cause Chicago Fire? 02:51 Mrs. O'Leary's infamous cow may not be to blame for the Great Chicago Fire. From: Don Wildman, Mysteries at the Museum and Shrunken Heads and Broken Arrow Similar Topics: History Travel's Best Related Videos Captured U-Boat Helps Win WWII 02:37 First Nuclear Test in History 02:29 Chicago World's Fair 02:55 Preserving the Eastland 02:41 First Refrigerated Rail Car 02:24 The Mother of CSI 03:14 Roosevelt's Walking Cane 02:41 Chicago's Field Museum 02:01 More Videos Museum of Science and Industry 01:55 How Did Sue the T-Rex Die? 01:36 Explore Historic Springfield 03:19 A Monster of a Man 03:10 Voracious Teenage T. Rex 01:25 The Lady and the Panda 02:52 America's First Serial Killer 03:21 Crash at Area 51 01:59 Small Coupon, Huge Fraud 04:20 A Deadly Maritime Tragedy 02:44 Meet Balto, Hero Sled Dog 03:17 Was Marilyn Monroe Murdered? 02:16 Inside Capone's Haunted Cell 02:37 Cannibalism in the Arctic 03:54 Salton Sea Disaster 02:48 Combat Sub Sinks Union Ship 03:59 We Recommend Beach-n-RVs 13 Photos Best Botanical Gardens in the US 12 Photos Best Midwest Beaches 10 Photos New Seven Wonders of the World No-Passport-Required Destinations 20 Photos 50 of the Most Charming Small Towns in America 50 Photos