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U.S. National Archives: Fort Lyon, on James or Potomac River
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U.S. National Archives: Landing and pontoon bridge on the Potomac River
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U.S. National Archives: Forts on Potomac River. Battery Rodgers, Below Alexandria.
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U.S. National Archives: Georgetown and bridge across Potomac River. Canal in foreground
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U.S. National Archives: Transports on Potomac River, Jones Point