The death cast of Cheng and Eng; an umbrella from a Cold War assassination; the legend of an Al Capone jail cell.
Blueprints show the cause of a bad engineering mistake in U.S. history; a journal inspired a work of literature; a scary rag doll.
The examination of a uniform, a manuscript, and Ice Age Duelling Mammoths.
Don looks at how a drug syndicate was brought down; a gold ingot from a sunken ship; a relic from Area 51.
Uncovering the cause of the Eastland Disaster; a possible map to a gold mine; the weapon in a double murder.
A mailbox from the Cold War; an antique wheelbarrow's secret; a preserved monster head from a probable sea beast.
Don examines a miniature head from the jungle; a journal details an Arctic expedition; the dented casing of the hydrogen bomb of a nuclear accident.
Don uncovers a the story behind a work of art; a religious cult warning; a future robot hero.
Don examines the shoes of a famous Wild West tale, a miniature spacesuit and an ancient scroll discovered in a bottle.
Don examines a cardboard box that once held a country's fear, a pill bottle from Monroe's death and a Civil War submarine.
Don inspects the only known lottery scam ticket; a lifeboat that survived a hijacking; a damaged plane part that might be responsible for ghost sightings.
Don looks at a car that can fly; a circular saw that was used in a prison riot; the fire that destroyed Coney Island's amusement park.