©Copyright : Fisher, 1939 - U.S. Patent No. 2166561
              Fisher World Treasure News, 1996-1997 
 Magazine   : Science and Mechanics Magazine (February 1939)
              Fisher World Treasure News (Vol.5, Issue 2 1996-1997) 
 URL        : http://www.fisherlab.com/
              http://www.treasurenet.com/fisher/wtn/
 Title      : Plans for Radio Treasure Finder
 Author     : Dr. Gerhard Fisher, 1939
              Fisher World Treasure News, 1996-1997