Following the Civil War and the assassination of the president, Douglas penned a letter that was republished in newspapers of the time.

In the clear waters off Florida’s Dry Tortugas National Park sits a massive brick fort where one doctor flipped his story from villain to hero. Samuel Mudd, jailed for helping Lincoln’s killer, became Fort Jefferson’s unlikely savior during a deadly fever outbreak. Here’s what happened.

The House Task Force on the Declassification of Federal Secrets held a hearing Tuesday afternoon on the assassination of President John F. Kennedy. Witnesses at the hearing included Dr. Don Curtis, who was one of the first to treat Kennedy at Parkland Memorial Hospital in Dallas,