Books
  . "1421:  The Year China Discovered America," Gavin Menzies, Wm Morrow & Co., 2003, 576 pp.  Amazon 
  . "When China Ruled the Seas:  The Treasure Fleet of the Dragon Throne 1405-1433," Louise Levathes, Simon & Shuster, 1994, 252 pp.   Amazon

Web
 - Official 1421 site
-  Sacramento River JunK (maybe)   1997 North Sacto Valley Flood Map  
-  4/03/02 article  10/22/02  BBC News  
-  The Great Chinese Mariner Zheng He [Cheng Ho]  
-  The Admiral of the Western Seas - Cheng Ho [Zheng He]   
-  The Rise and Fall of 15th Century Chinese Seapower  
-  Siu-Leung Lee PhD Research 2/16/2002  
-  1492:  The Prequel  
-  Voyages of the Dragon Kings  
-  The Trilingual Inscription of Admiral Zheng He  
-  Map:  Zheng He's Voyages 

-  Zheng He  (Chinapage.com)
-  Zheng He and His Voyages  
-  Zheng He, The Chinese Muslim Admiral  (Islam for Today)
-  Zheng He, the Chinese Navigator - Did He Discover America?  
-  Starry Night Charts Support Theory Chinese Beat Columbus to America  
-  Zheng He's Manual  
-  The Remarkable Ocean World  
-  Chinese Explorer May Redraw Map of History  (2/6/02, Xinhuanet)

-  A Testament to an Odyssey, A Monument to a Failure Set in stone: Sri Lanka   
-  The Emporer's Giraffe  
-  The Voyage of Zheng He (Cyprus mail)
-  Friends of Zheng He  
-  Zheng He  
-  Zheng He Park  
-  The 600th Anniversay of Zheng He's Voyages (2005)  Commemoration  
-  China - A Country Study