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Ahland, Robert W.

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Index card: Crater from north face showing breach and pyroclastic flow. Aerial photo taken from U.S. Forest Service observer aircraft. Skamania County, Washington. July 26, 1980.
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Index card: Distant view from north through breach with portion of Spirit Lake area in foreground. Aerial photo taken from U.S. Forest Service observer aircraft. Skamania County, Washington. July 26, 1980.
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Index card: Upper east slope of volcano. View is to the south. Aerial photo taken from U.S. Forest Service observer aircraft. Skamania County, Washington. July 26, 1980.
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Index card: View of lower east slope of Mount St. Helens showing ash-covered valleys. Aerial photo taken from U.S. Forest Service observer aircraft. Skamania County, Washington. July 26, 1980.
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Index card: Portion of east side of Mount St. Helens. Aerial photo taken from U.S. Forest Service observer aircraft. Skamania County, Washington. July 26, 1980.
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