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U.S. Army Corps of Engineers, Baltimore District: Diamondback terrapins on Poplar Island
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U.S. Army Corps of Engineers, Baltimore District: Army Corps park rangers
PortlandCorps: Fire Pics Dec 15 111
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AP Imagery: Peter English at English Park
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AP Imagery: Cannelton Lock & Dam - B&W
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AP Imagery: B&W - Newburgh Dam