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Placing crossarms on telephone poles Mammoth Cave National Park; National Park Service
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1938-05-16
Placing crossarms on telephone poles Mammoth Cave National Park; National Park Service
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1938-05-16
Needed maintenance on telephone lines Mammoth Cave National Park; National Park Service
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1945-10
Raising pole on new telephone line, 1938 Mammoth Cave National Park; National Park Service
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1938-05-10
Raising pole on new telephone line, 1938 Mammoth Cave National Park; National Park Service
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1938-05-10
Yellowstone photo album 10, page 127 Yellowstone National Park
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Circa 1935
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Yellowstone photo album 10, page 111 Yellowstone National Park
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Circa 1935
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Showing men constructing new telephone line near the central office, 1939 Mammoth Cave National Park; National Park Service
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1939-05-5
Construction of telephone system, placing cross-arms and insulators on telephone pole Mammoth Cave National Park; National Park Service
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Forestry, pruning trees along telephone line, cleared area on Highway 70, 1938 Mammoth Cave National Park; National Park Service
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1938-05-05
Forestry, pruning trees along telephone line, cleared area on Highway 70, 1938 Mammoth Cave National Park; National Park Service
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1938-05-05
Enrollee drilling into new telephone pole while another enrollee removes bark from pole Mammoth Cave National Park; National Park Service
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1938-12
Construction, showing how wire is stretched from post to post, telephone lines, 1939 Mammoth Cave National Park; National Park Service
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1939-04-26
Clearing area for new telephone line and cuttingdangerous timber from near line, 1938 Mammoth Cave National Park; National Park Service
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1938-05-03
Cleared area for new telephone line to be usedby the park service, 1938 Mammoth Cave National Park; National Park Service
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1938-05-03
Telephone line construction, digging ditch near technicians' building for underground telephone line, 1939 Mammoth Cave National Park; National Park Service
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1939-08-10
Telephone line construction, using truck to stretch aerial cable on new telephone system line, 1939 Mammoth Cave National Park; National Park Service
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1939-09-28
Forestry, showing type of cutting employed in clearing for telephone line construction, NP-2 Mammoth Cave National Park; National Park Service
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1938-07-13
Showing men carrying reel of wire for the telephone line which is being constructed in the park area, 1939 Mammoth Cave National Park; National Park Service
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1939-04-26
Telephone line demolition, taking up poles on which telephone wire was strung before underground wire was installed, 1939 Mammoth Cave National Park; National Park Service
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1939-11-01
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About 59 Items

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