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1Published 1970“...National Park Service,...”
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2by Kurjack, Dennis C.“...National Park Service,...”
Published 1954
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3by Stakely, J. Tracy, 1966-“...National Park Service,...”
Published 2005
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5by Anderson, Susan H.“...Dept. of the Interior, National Park Service ;...”
Published 1978
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6Published 1984“...U.S. Dept. of the Interior, National Park Service,...”
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7Published 1988“...U.S. Dept. of the Interior, National Park Service,...”
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8by Paige, John C.“...U.S. Dept. of the Interior/National Park Service,...”
Published 1989
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9by Brown, Sharon A.“...U.S. Dept. of the Interior, National Park Service,...”
Published 1989
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10Published 1989“...U.S. Dept. of the Interior, National Park Service,...”
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11Published 1991“...[U.S. Dept. of the Interior, National Park Service],...”
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12by Fritz, David L.“...U.S. Dept. of the Interior, National Park Service,...”
Published 1993
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13Published 1995“...U.S. Dept. of the Interior, National Park Service,...”
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14Published 1995“...[U.S. Dept. of the Interior, National Park Service],...”
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15Published 2003“...National Park Service, U.S. Dept. of the Interior,...”
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16Published 2004“...[National Park Service, U.S. Dept. of the Interior],...”
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17by Chappell, Gordon S.“...National Park Service, U.S. Dept. of the Interior,...”
Published 1991
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18Published 1991“...U.S. Dept. of the Interior, National Park Service,...”
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19by Unrau, Harlan D.“...U.S. Department of the Interior, National Park Service,...”
Published 1991
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20Published 2011“...National Park Service, Harpers Ferry Center,...”
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