Overview: At the Chicago History Museum, a pair of ostrich-feather fans tells of a risque dancer who scandalized the Chicago's World Fair. At the Joseph Jefferson Mansion and Gardens on Lake Peigneur in Louisiana, an antique urn is one of few relics to survive a terrifying earth-shaking disaster. And at the Los Angeles Police Museum, twisted bullet fragments are all that remain of a notorious gangster's brutal slaying that remains shrouded in mystery.