Showing men pruning roots of small trees prior to planting, 1939
Mammoth Cave National Park; National Park Service
Forestry, showing tree pruner cutting off limb of tree in picnic area, 1940
Mammoth Cave National Park; National Park Service
Forestry, pruning operation over cabin group No. 1, nine climbers were visible to the eye, 1938
Mammoth Cave National Park; National Park Service
Enrollee Lloyd Vincent in NP-2 forestry shop filing champion teeth into carpenter saw to be used for tree pruning, 1938
Mammoth Cave National Park; National Park Service
Forestry, characteristic saw pruning, wound on strongly branched Red Cedar before chisel work to produce a flush cut, 1938
Mammoth Cave National Park; National Park Service
Forestry, to show knots used in attaching pruning tools to safety rope for being drawn into tree by climber, 1938
Mammoth Cave National Park; National Park Service
Forestry, catching branch after it was partly sawed off, climber is tossing branch free of telephone and electric wires below, 1938
Mammoth Cave National Park; National Park Service
Forestry, characteristic saw pruning, wound on strongly branched Red Cedar before chisel work to produce a flush cut, 1938
Mammoth Cave National Park; National Park Service
Forestry, catching branch after it was partly sawed off, climber is tossing branch free of telephone and electric wires below, 1938
Mammoth Cave National Park; National Park Service
Forestry, pulling out jump cut that falling branch may tear, telephone lines fastened to tree being pruned, tree at Mammoth Cave Ferry picnic area, 1938
Mammoth Cave National Park; National Park Service
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