Exploration
Deep-sea exploration ocean level tools history
Noaa history history history
NOAA Ocean Explorer: History
''USS Porpoise'' history navy mil photos
USN Ships--USS Porpoise (1836-1854)
Navy Art Gallery Exhibit: The Alfred Agate Collection: The United States Exploring Expedition, 1838-1842 history navy mil exploration
Navy Art Gallery exhibit: The Alfred Agate Collection: The United States Exploring Expedition, 1838-1842
''USS Vincennes'' history navy mil photos
USN Ships--USS Vincennes (1826-1867)
The United States Exploring Expedition, 1838-1842 - from the Smithsonian Institution Libraries Digital Collections
The United States Exploring Expedition, 1838-1842
Brief biography of Charles Wilkes history navy mil
Wilkes
Gavin Menzies' official website about his research on Zheng He
1421 - The year China discovered the world - Home Page
BBC News China map lays claim to Americas (January 13 2006) news asia pacific
BBC NEWS | Asia-Pacific | China map lays claim to Americas
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