The personal collection of Fred Hammond, VE3HC SK a Canadian electronic  manufacturer.  His radios are on  display at the company's museum.  Their Web Site is an excellent source of information on Reginald Fessenden.

http://chem.ch.huji.ac.il/~eugeniik/history/fessenden.html 

     A fine collection of Fessenden information with special highlights on Reginald's activities in Machrihanish, Scotland. Look for a listing of the special BBC Radio 3 broadcast on December 23, 2006.  Do not miss Duncan's extensive link page.  

http://groups.msn.com/fessenden 

     Wikipedia, the free Internet Encyclopedia, writes about the history and facts surrounding Fessenden.

http://en.wikipedia.org/wiki/Reginald_Fessenden