Stored at the Furnace Creak Visitor Center in Death Valley National Park is an antique weathered trunk discovered in the unforgiving desert landscape. Some believe it is evidence of a legendary cross-country journey. 

On display at the Chicago History Museum are group of bricks that were the key to one of the largest prison breaks of the Civil War. 

And the Omaha Public Library is home to a gruesome relic from Nebraska's rough and tumble frontier past: a preserved human scalp.

For even more Mysteries at the Museum, head to discovery+. Go to discoveryplus.com/mystery to start your 7-day free trial today. Terms apply.

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