John Ericsson National Memorial
By LancelotLink @ 2010-11-05 08:26:22
John Ericsson National Memorial, located near the National Mall at Ohio Drive and Independence Avenue, SW, in Washington, D.C., is dedicated to the man who revolutionized naval history with his invention of the screw propeller. The Swedish engineer John Ericsson was also the designer of the USS Monitor, the ship that ensured Union naval supremacy during the American Civil War.
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