Open Parks Network

Yellowstone photo album 18, page 186 Yellowstone National Park

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Circa 1931
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Checking traps, March 1980 Biscayne National Park; National Park Service Checking traps for fish.

1980-03

Yellowstone photo album 18, page 192 Yellowstone National Park

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Circa 1931
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View of dam and fish trap in stream Mammoth Cave National Park; National Park Service

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Circa 1935

View of dam and fish trap in stream Mammoth Cave National Park; National Park Service

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Circa 1935

View of dam and fish trap in stream Mammoth Cave National Park; National Park Service

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Circa 1935

View of dam and fish trap in stream Mammoth Cave National Park; National Park Service

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Circa 1935

View of dam and fish trap in stream Mammoth Cave National Park; National Park Service

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Circa 1935

Yellowstone photo album 18, page 185 Yellowstone National Park

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Circa 1931
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View of NPS ranger pulling a fish trap from the river, which is flooding Mammoth Cave National Park; National Park Service

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Circa 1935

Yellowstone photo album 18, page 177 Yellowstone National Park

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Circa 1931
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Yellowstone photo album 18, page 174 Yellowstone National Park

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Circa 1931
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