He was known, quite appropriately, as the "hanging judge." During his 21 years at Fort Smith, Judge Isaac C. Parker sent 160 men to the gallows, a replica of which this week's Mystery Photo depicts.

On the morning of April 21, 2009, a local homeowner arrived at the visitor center at Fort Smith National Historic Site in Arkansas with the best of intentions but the worst of plans—he was carrying an old cannonball he'd dug up in his garden.