Questions remain 75 years after mysterious Fort Knox UFO incident, downed pilot | Article | The United States Army
Amazon.com: The Thomas Mantell UFO Encounter: 9781506144207: Dudding, George, Moore, Edward: Books
F-51s vs UFOs
Mantell UFO incident - Wikipedia
Simpson Co. creates Capt. Thomas Mantell Jr. Day to commemorate the Mantell UFO incident
Air Safety #OTD by Francisco Cunha on Twitter: "#OTD in 1948: Mantell UFO incident: an ANG P-51 [44-63869] chasing a UFO crashes in Kentucky (US), pilot Thomas Mantell dies. UFO was likely