Your search for Geographic "Unknown; United States" resulted in 51 records.
- Title: Propeller plane, 30 seconds
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:30
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- Title: Propeller plane, 20 seconds
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:20
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- Title: Jet (0001882)
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:10
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- Title: Jet
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:10
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- Title: Woodpecker hammer (probable Northern Flicker)
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:02
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- Title: Thunder
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:05
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- Title: Tree popping
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:16
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- Title: Tree popping in freezing weather
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:05
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- Title: Swan feet slapping on water
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:07
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- Title: Rain
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:10
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- Title: Rain (0001937)
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:51
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- Title: Rattling metal slats
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:09
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- Title: Rotary snow plow
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:11
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- Title: Snow plow
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:10
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- Title: Snow plow (0001961)
- Date: unknown
- Creator: National Park Service
- Description:
- Duration: 00:00:13
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