Mystery Boom Skyquakes –
John Keel on Charles Fort, UFO’s, Skyquakes – John Keel being interviewed by David Letterman in 1980.
Websites focused on this phenomenon:
General Articles:
- Explosion Sounds Are Literally Shaking an LA County Town and Nobody Knows the Cause By Mike Pearl, March 7, 2016
- The Mystery Crashes: Are They a Global Phenomenon? Gralien Report, December 10, 2014
- Annual December “boom” marks third year in Rhode Island – December 9, 2014
- Source of ‘boom’ remains mystery – TurnTo10.com
Prosaic sources:
- Sonic boom rolls across Charleston Tuesday with Marine jets training off the coast – Schuyler Kropf , Jan 26 2016
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