UFOs: Captain Thomas Mantell encounters a huge UFO, 1948 Stock Photo - Alamy
The First Air Force Pilot to Die Chasing a UFO Was Actually Chasing a Secret Balloon | Military.com
Friends of Gamaliel Cemetery - Did you know that Capt. Thomas F. Mantell, Jr. was killed in a plane crash on January 7, 1948 while chasing a UFO in Kentucky? | Facebook
Weird Darkness: Stories of the Paranormal, Supernatural, Legen...