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Sewickley Valley Historical Society unveils historical marker dedicated to Lewis & Clark Expedition | TribLIVE.com
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A Lewis and Clark Trail Expedition ROAD TRIP: See the Route Map! | Road trip planning, Road trip usa, American road trip
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What Was the Lewis and Clark Expedition? | Lewis and clark, Lewis and clark trail, Lewis and clark map
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Sewickley Valley Historical Society unveils historical marker dedicated to Lewis & Clark Expedition | TribLIVE.com
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