Things That Go Boom in the Night:
Article about the Moodus (Connecticut) noises and the findings of
recent investigations that linked these noises with seismic
activity.
http://www.gi.alaska.edu/ScienceForum/ASF8/896.html
Taos Hum Page:
A webpage about the "Taos Hum," a low throbbing sound heard in quiet
locations throughout the US. The source is still a mystery.
http://www.eskimo.com/~billb/hum/hum.html
Hum Haunts Indiana City; Its Source Is a Mystery:
New York Times article about a mysterious low-frequency noise
reported by residents of Kokomo, IN.
http://www.nytimes.com/2002/06/23/national/23KOKO.html
The Hum:
An investigation into the cause and adverse health effects of the
Bristol Hum, an obnoxious low frequency noise heard in England. The
sound is attributed to pulse modulated radio transmissions.
http://homepages.tesco.net/~John.Dawes2/
The Moodus Noises:
Account of the legends and modern accounts of the mysterious sounds
heard in Moodus, Connecticut.
http://www.curbstone.org/index.cfm?webpage=96