The New England Wireless and Steam Museum, Inc.
http://users.ids.net/%7enewsm/mission.html

A Marconi distress transmitter, the same as Titanic's.
A Marconi 1900 coherer and jigger.
The oldest equipped radio station in the world.
An Edison 1882 diode - the first of all radio tubes.
An 1881 Professor Dolbear radio receiver. It still works.
The first commercial transistor.