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