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Lyndon Baines Johnson Memorial Grove on the Potomac National MemorialHiker at Lyndon Baines Johnson Grove
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Lyndon Baines Johnson Memorial Grove on the Potomac National Memorial
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These pages feature information and highlights of our partners and current park projects.

Dennis Hart Mahan  

Did You Know?
The design for the Defenses of Washington was based on a textbook published in 1836 called A TREATISE ON FIELD FORTIFICATIONS, by Dennis Hart Mahan. Mahan was a professor of civil and military engineering at West Point.

Last Updated: August 16, 2007 at 21:50 EST