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.

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.

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.

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.

The Moodus Noises
Account of the legends and modern accounts of the mysterious sounds heard in Moodus, Connecticut.