HISTORY DETECTIVES investigate a propeller from a World War II drone, a wooden club that could be Teddy Roosevelt’s and a letter that Clara Barton could have written concerning a soldier’s life.

Could this propeller be from a World War II drone, the prototype for the assault drones the U.S. uses today in Afghanistan and Iraq? This inscribed, wooden club appears to be a gift to Teddy Roosevelt. Who gave him this club, and why? If Clara Barton wrote this letter, why was she concerned about the life of the soldier she mentions?