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Expansion and Exploration in the New Republic: The Louisiana Purchase and the Lewis and Clark Expedition | American Battlefield Trust
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A portrait of Thomas Jefferson, who was president when the Louisiana Territory was purchased and commissioned Lewis and Clark's expedition. | DPLA
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Why Didn't Lewis Ever Finish the Journals for Jefferson? - Lewis & Clark Online Exhibit - State Historical Society of North Dakota
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IOWA - Lewis & Clark National Historic Trail, Thomas Jefferson, Louisiana Purchase | Lewis and clark trail, Lewis and clark, Historical
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