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Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
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1946-07
Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
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1946-07
Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
View on map 
1946-07
Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
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1946-07
Soil and moisture conservation, hilly field Mammoth Cave National Park; National Park Service
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Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
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1946-07
Soil and moisture work, erosion, 1945 Mammoth Cave National Park; National Park Service
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1945-06
Soil and moisture work, erosion, 1945 Mammoth Cave National Park; National Park Service
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1945-06
Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
View on map 
1946-07
Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
View on map 
1946-07
Soil and moisture conservation, trees in background Mammoth Cave National Park; National Park Service
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Soil and moisture conservation, trees in background Mammoth Cave National Park; National Park Service
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Soil and moisture conservation, trees in background Mammoth Cave National Park; National Park Service
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Soil and moisture conservation, trees in background Mammoth Cave National Park; National Park Service
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Soil and moisture conservation, trees in background Mammoth Cave National Park; National Park Service
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Soil and moisture conservation, Brooks Knob, facing west, 1948 Mammoth Cave National Park; National Park Service
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Circa 1948
Soil and moisture work, two men with sticks, 1945 Mammoth Cave National Park; National Park Service
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1945-06
Landscape shot of soil erosion facing east, Brooks Knob, 1948 Mammoth Cave National Park; National Park Service
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Circa 1948
Landscape shot showing the effects of soil erosion, Joppa Church, 1948 Mammoth Cave National Park; National Park Service
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Circa 1948
Doyle Valley, landscape shots showing soil erosion and the improvements after work, 1949 Mammoth Cave National Park; National Park Service
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Circa 1949
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