At Bright's Pioneer Exhibit in Le Grand, California is an ordinary yellow schoolbus that became ensnared in a crime so heinous that it would devastate an entire community. So what notorious felony was committed on board this vehicle? 

The Texas City Museum in Texas City, Texas houses a ball of sisal twine that bore witness to one of the worst industrial accidents in American history. What was this disaster? And what part did this simple object play in the catastrophic events of that day? 

Prominently displayed at the Mel Fisher Maritime Museum in Key West, Florida is what appears to be a set of plain brown pebbles. What are these homely rock-like formations? And why were they once prized even more than silver or gold?

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